Importance of database design (1)
Download as PPTX, PDF1 like15,255 views
The document discusses database design and the design process. It explains that database design involves determining the relationships between data elements, structuring them logically, and specifying attributes. The design process includes determining the database purpose, finding and organizing information, dividing it into tables, specifying columns and primary keys, and setting up relationships. It also recommends creating child tables to store multiple pieces of information rather than adding many fields to the core table. This improves the database structure and makes it more extensible.
1 of 19
Downloaded 137 times
Ad
Recommended
Data models
Data modelsKIRANPREET KAUR The document discusses different types of data models including logical, physical, and record-based models. It describes key concepts of data models like entities, attributes, relationships and different relationship types. Specific models covered are hierarchical, network, and relational with details on their structure, advantages and disadvantages.
Database Design
Database Designlearnt The document discusses database design and the design process. It explains that database design involves determining the logical structure of tables and relationships between data elements. The design process consists of steps like determining relationships between data, dividing information into tables, specifying primary keys, and applying normalization rules. The document also covers entity-relationship diagrams and designing inputs and outputs, including input controls and designing report formats.
Object oriented database concepts
Object oriented database conceptsTemesgenthanks Database systems that were based on the object data model were known originally as object-oriented databases (OODBs).These are mainly used for complex objects
Normalization in DBMS
Normalization in DBMSHitesh Mohapatra This document discusses database normalization and different normal forms including 1NF, 2NF, 3NF, and BCNF. It defines anomalies like insertion, update, and deletion anomalies that can occur when data is not normalized. Examples are provided to illustrate the different normal forms and how denormalizing data can lead to anomalies. The key aspects of each normal form like removing repeating groups (1NF), removing functional dependencies on non-prime attributes (2NF), and removing transitive dependencies (3NF, BCNF) are explained.
Database recovery
Database recoveryVritti Malhotra Database recovery is the process of restoring a database to its most recent consistent state before a failure occurred. The purpose is to preserve the ACID properties of transactions and bring the database back to the last consistent state prior to the failure. Database failures can occur due to transaction failures, system failures, or media failures. A good recovery plan is important for making a quick recovery from failures.
Difference between Homogeneous and Heterogeneous
Difference between Homogeneous and HeterogeneousFaraz Qaisrani Muhammad Faraz Qaisrani from the 2nd Batch at Benazir Bhutto Shaheed University discusses types of distributed database management systems (DDBMS). There are two main types: homogeneous, where all data centers use the same software, and heterogeneous, where different data centers may use different database products. Homogeneous systems are easier to design and manage but can be difficult for organizations to implement uniformly. Heterogeneous systems allow integration of existing databases but require translations between different hardware and software.
Normalization in DBMS
Normalization in DBMSPrateek Parimal Normalization is a process used to organize data in a database. It involves breaking tables into smaller, more manageable pieces to reduce data redundancy and improve data integrity. There are several normal forms including 1NF, 2NF, 3NF, BCNF, 4NF and 5NF. The document provides examples of tables and how they can be decomposed into different normal forms to eliminate anomalies and redundancy through the creation of additional tables and establishing primary keys.
Database basics
Database basicsprachin514 This document provides an overview of database basics and concepts for business analysts. It covers topics such as the need for databases, different types of database management systems (DBMS), data storage in tables, common database terminology, database normalization, SQL queries including joins and aggregations, and database design concepts.
dbms notes.ppt
dbms notes.pptRanjit273515 Database management system notes dbdhehrgrvrv.sgegegegeggegegrgggrgyeheve dbdgdhevrvrgrgrhryhe dgdhdhdhrhege rhrhrgevrhe dhdhehrhrhrhr dhdhdjdgdvrv dbdhdrbr dhdhebd hdbebdhdhdbd dhdbehdhd dhdhebdhdhd dhdhdjdbd dhdhdh dhdhdjd djshebr djdhebehdb fnskdbd fjfns ddjdke djdjsnsjf. Djsjejdkdnfd djejsjdbf dhshdjfjf djdjdjeje ddhdejjed djdjsdnnd djssgdg dbddjejdn dndjdjdjdr djdjeneb dnfbfbf fbdjdjd dbddjdjdn ddjdjdnd djdjdndb fdndjdj dgdhd djdjdjdbd bddhdbdgr dhdhdbd. Dbdjdbdbhdhdbe dhdfhdbe dbdhdb
1.2 steps and functionalities
1.2 steps and functionalitiesKrish_ver2 Data mining involves multiple steps in the knowledge discovery process including data cleaning, integration, selection, transformation, mining, and pattern evaluation. It has various functionalities including descriptive mining to characterize data, predictive mining for inference, and different mining techniques like classification, association analysis, clustering, and outlier analysis.
Data warehousing and online analytical processing
Data warehousing and online analytical processingVijayasankariS The document discusses data warehousing and online analytical processing (OLAP). It defines a data warehouse as a subject-oriented, integrated, time-variant and non-volatile collection of data used to support management decision making. It describes key concepts such as data warehouse modeling using data cubes and dimensions, extraction, transformation and loading of data, and common OLAP operations. The document also provides examples of star schemas and how they are used to model data warehouses.
Integrity constraints in dbms
Integrity constraints in dbmsVignesh Saravanan This document discusses SQL commands for creating tables, adding data, and enforcing integrity constraints. It covers the core SQL commands: DDL for defining schema, DML for manipulating data, DCL for controlling access, DQL for querying data, and TCL for transactions. Specific topics summarized include data types, primary keys, foreign keys, indexes, views, stored procedures, functions and triggers. Integrity constraints like NOT NULL, UNIQUE, CHECK, DEFAULT are explained. The document also covers SQL queries with filtering, sorting, patterns and ranges. Authorization using GRANT and REVOKE commands is briefly covered.
1.1 binary tree
1.1 binary treeKrish_ver2 The document discusses binary trees and their representations and operations. It defines binary trees as trees where each node has at most two child nodes. It also defines complete binary trees as trees where every node has two children except leaf nodes. The document discusses array and linked representations of binary trees and various traversal operations like preorder, inorder and postorder traversals. It also provides code snippets for inserting and deleting nodes from a binary tree.
Odbms concepts
Odbms conceptsDabbal Singh Mahara The document discusses object-oriented databases and their advantages over traditional relational databases, including their ability to model more complex objects and data types. It covers fundamental concepts of object-oriented data models like classes, objects, inheritance, encapsulation, and polymorphism. Examples are provided to illustrate object identity, object structure using type constructors, and how an object-oriented model can represent relational data.
Data models
Data modelsUsman Tariq This document provides an overview of data modeling concepts. It discusses the importance of data modeling, the basic building blocks of data models including entities, attributes, and relationships. It also covers different types of data models such as conceptual, logical, and physical models. The document discusses relational and non-relational data models as well as emerging models like object-oriented, XML, and big data models. Business rules and their role in database design are also summarized.
Files Vs DataBase
Files Vs DataBaseDr. C.V. Suresh Babu The document compares file systems and database management systems (DBMS) for storing a company's 500GB of employee, department, product, and sales data. It notes several drawbacks of using a file system, including data redundancy, integrity issues, restricted concurrent access, and lack of flexibility. It then outlines key advantages of using a DBMS instead, such as data sharing, enforcement of security and integrity, reduction of redundancy, and support for concurrent access and crash recovery.
DBMS unit-5.pdf
DBMS unit-5.pdfProf. Dr. K. Adisesha The document discusses transaction processing in database management systems. It covers topics such as ACID properties, transaction states, concurrency control protocols including lock-based, timestamp ordering, and validation-based protocols. The document also discusses transaction failure including transaction failure, system crash, disk failure, and recovery using log-based approaches.
database recovery techniques 
database recovery techniques Kalhan Liyanage Database recovery techniques restore the database to its most recent consistent state before a failure. There are three states: pre-failure consistency, failure occurrence, and post-recovery consistency. Recovery approaches include steal/no-steal and force/no-force, while update strategies are deferred or immediate. Shadow paging maintains current and shadow tables to recover pre-transaction states. The ARIES algorithm analyzes dirty pages, redoes committed transactions, and undoes uncommitted ones. Disk crash recovery uses log/database separation or backups.
Database Systems - SQL - DCL Statements (Chapter 3/4)
Database Systems - SQL - DCL Statements (Chapter 3/4)Vidyasagar Mundroy The document discusses the DCL (data control language) statements in SQL. It covers connection management statements used to connect to and disconnect from databases. It describes transaction management statements like START TRANSACTION, COMMIT, and ROLLBACK used to control transactions. It also covers access control statements like GRANT and REVOKE used to manage user privileges and access to database objects.
ER-Model-ER Diagram
ER-Model-ER DiagramSaranya Natarajan Here are the entity relationship diagrams and tables for the car insurance company database:
(a) E-R Diagram:
Person - owns - Car
(1:M)
Car - involved in - Accident
(0:M)
(b) Tables:
person
(driver_id primary key,
name, address)
car
(license primary key,
year, model, driver_id foreign key references person)
accident
(report_number primary key,
date, location)
participated
(driver_id foreign key references person,
license foreign key references car,
report_number foreign key references accident
3 Tier Architecture
3 Tier ArchitectureWebx The document discusses 3-tier architecture, which separates an application into three logical layers - the presentation layer, business logic layer, and data layer. It describes how this architecture evolved from earlier single-tier and dual-tier models. The 3-tier model provides advantages like scalability, reusability, security, and availability. While more complex than 2-tier, it allows for improved performance in medium to large systems by distributing the application across servers. An example is provided of implementing a 3-tier application using ASP.NET with distinct presentation, business, and data access layers.
Overview of physical storage media
Overview of physical storage mediaSrinath Sri - Physical storage media can be classified by access speed, cost per unit of data, and reliability. This includes cache, main memory, flash memory, magnetic disks, optical disks, and magnetic tapes.
- Faster but more expensive media like cache and main memory are primary storage, while magnetic disks represent secondary storage. Tapes and optical disks provide tertiary, offline storage.
- Volatility also differs, with volatile storage like main memory losing data on power loss, while nonvolatile media like disks and flash retain data. The database typically resides on nonvolatile secondary storage for long-term access.
Decomposition using Functional Dependency
Decomposition using Functional DependencyRaj Naik The document discusses functional dependencies and database normalization. It provides examples of functional dependencies and explains key concepts like:
- Functional dependencies define relationships between attributes in a relation.
- Armstrong's axioms are properties used to derive functional dependencies.
- Decomposition aims to eliminate redundancy and anomalies by breaking relations into smaller, normalized relations while preserving information and dependencies.
- A decomposition is lossless if it does not lose any information, and dependency preserving if the original dependencies can be maintained on the decomposed relations.
Shadow paging
Shadow pagingGowriLatha1 The document describes shadow paging, an alternative to log-based recovery for databases. It maintains two page tables during transactions: a current page table and a shadow page table stored in non-volatile storage. This allows recovery of the pre-transaction state if needed. Shadow paging has advantages over logging like no log overhead and trivial recovery, but has higher commit overhead as many pages must be flushed. It also risks data fragmentation and requires garbage collection of old data versions after transactions.
database language ppt.pptx
database language ppt.pptxAnusha sivakumar This document provides information about different types of database languages. It discusses database definition languages (DDL) which are used to define the database structure, data manipulation languages (DML) which are used to retrieve and modify data, data control languages (DCL) which control security and access, and transaction control languages (TCL) which manage transactions. Examples of commands for each language type are provided, such as CREATE, ALTER, and DROP for DDL and SELECT, INSERT, UPDATE, and DELETE for DML.
7 data management design
7 data management designChâu Thanh Chương The document discusses different approaches to data management and persistence in applications, including:
1) Storing objects directly in files or using a database management system (DBMS) to store data in tables while hiding physical storage details.
2) Design questions around persistence such as whether to use files, a relational or object DBMS, and how to structure the logical and physical layers.
3) Common techniques for mapping objects to relational databases like normalization, handling inheritance and associations.
4) Alternatives for designing data management classes like adding persistence methods to classes or using broker classes.
Type of database models
Type of database modelsSanthiNivas This document discusses different types of database models including high-level, representation, and low-level models. It describes the entity-relationship model as a high-level model that focuses on entities, attributes, and relationships without representation concerns. The relational model and hierarchical model are presented as representation models that describe how data is physically structured and stored. Key aspects of each model like structure, terminology, advantages, and disadvantages are summarized.
08. Object Oriented Database in DBMS
08. Object Oriented Database in DBMSkoolkampus The document discusses object-oriented databases and the need for complex data types that traditional databases cannot support well. It covers the core concepts of the object-oriented data model including objects, classes, inheritance, and object identity. Key advantages of the object-oriented approach include its ability to model complex relationships and enable persistence of programming language objects.
Large scale sql server best practices
Large scale sql server best practicesmprabhuram This document provides recommendations for optimizing the performance and manageability of partitioned fact tables in a data warehouse. Some key recommendations include:
- Consider partitioning large fact tables on the date key to enable features like faster queries on single partitions, easier data loading and unloading, and partition elimination.
- Build clustered indexes on the date key of fact tables and foreign keys of dimensions to support efficient date-based and dimension-based queries.
- Choose partition grains like months, quarters or years and avoid designs with only a few frequently accessed partitions.
- Write queries with predicates on the date key partition column to allow partition elimination for faster query performance.
Optimize access
Optimize accessAla Esmail This article provides tips for improving the performance of Microsoft Access 2007 applications. Some key tips include splitting the database into separate application and data files, compacting the database regularly, limiting fields returned in queries, adding indexes to fields used for criteria or joins, and using temporary tables to store intermediate query results rather than running the same queries repeatedly. Following these tips can help optimize database, query, form and report performance.
Ad
More Related Content
What's hot (20)
dbms notes.ppt
dbms notes.pptRanjit273515 Database management system notes dbdhehrgrvrv.sgegegegeggegegrgggrgyeheve dbdgdhevrvrgrgrhryhe dgdhdhdhrhege rhrhrgevrhe dhdhehrhrhrhr dhdhdjdgdvrv dbdhdrbr dhdhebd hdbebdhdhdbd dhdbehdhd dhdhebdhdhd dhdhdjdbd dhdhdh dhdhdjd djshebr djdhebehdb fnskdbd fjfns ddjdke djdjsnsjf. Djsjejdkdnfd djejsjdbf dhshdjfjf djdjdjeje ddhdejjed djdjsdnnd djssgdg dbddjejdn dndjdjdjdr djdjeneb dnfbfbf fbdjdjd dbddjdjdn ddjdjdnd djdjdndb fdndjdj dgdhd djdjdjdbd bddhdbdgr dhdhdbd. Dbdjdbdbhdhdbe dhdfhdbe dbdhdb
1.2 steps and functionalities
1.2 steps and functionalitiesKrish_ver2 Data mining involves multiple steps in the knowledge discovery process including data cleaning, integration, selection, transformation, mining, and pattern evaluation. It has various functionalities including descriptive mining to characterize data, predictive mining for inference, and different mining techniques like classification, association analysis, clustering, and outlier analysis.
Data warehousing and online analytical processing
Data warehousing and online analytical processingVijayasankariS The document discusses data warehousing and online analytical processing (OLAP). It defines a data warehouse as a subject-oriented, integrated, time-variant and non-volatile collection of data used to support management decision making. It describes key concepts such as data warehouse modeling using data cubes and dimensions, extraction, transformation and loading of data, and common OLAP operations. The document also provides examples of star schemas and how they are used to model data warehouses.
Integrity constraints in dbms
Integrity constraints in dbmsVignesh Saravanan This document discusses SQL commands for creating tables, adding data, and enforcing integrity constraints. It covers the core SQL commands: DDL for defining schema, DML for manipulating data, DCL for controlling access, DQL for querying data, and TCL for transactions. Specific topics summarized include data types, primary keys, foreign keys, indexes, views, stored procedures, functions and triggers. Integrity constraints like NOT NULL, UNIQUE, CHECK, DEFAULT are explained. The document also covers SQL queries with filtering, sorting, patterns and ranges. Authorization using GRANT and REVOKE commands is briefly covered.
1.1 binary tree
1.1 binary treeKrish_ver2 The document discusses binary trees and their representations and operations. It defines binary trees as trees where each node has at most two child nodes. It also defines complete binary trees as trees where every node has two children except leaf nodes. The document discusses array and linked representations of binary trees and various traversal operations like preorder, inorder and postorder traversals. It also provides code snippets for inserting and deleting nodes from a binary tree.
Odbms concepts
Odbms conceptsDabbal Singh Mahara The document discusses object-oriented databases and their advantages over traditional relational databases, including their ability to model more complex objects and data types. It covers fundamental concepts of object-oriented data models like classes, objects, inheritance, encapsulation, and polymorphism. Examples are provided to illustrate object identity, object structure using type constructors, and how an object-oriented model can represent relational data.
Data models
Data modelsUsman Tariq This document provides an overview of data modeling concepts. It discusses the importance of data modeling, the basic building blocks of data models including entities, attributes, and relationships. It also covers different types of data models such as conceptual, logical, and physical models. The document discusses relational and non-relational data models as well as emerging models like object-oriented, XML, and big data models. Business rules and their role in database design are also summarized.
Files Vs DataBase
Files Vs DataBaseDr. C.V. Suresh Babu The document compares file systems and database management systems (DBMS) for storing a company's 500GB of employee, department, product, and sales data. It notes several drawbacks of using a file system, including data redundancy, integrity issues, restricted concurrent access, and lack of flexibility. It then outlines key advantages of using a DBMS instead, such as data sharing, enforcement of security and integrity, reduction of redundancy, and support for concurrent access and crash recovery.
DBMS unit-5.pdf
DBMS unit-5.pdfProf. Dr. K. Adisesha The document discusses transaction processing in database management systems. It covers topics such as ACID properties, transaction states, concurrency control protocols including lock-based, timestamp ordering, and validation-based protocols. The document also discusses transaction failure including transaction failure, system crash, disk failure, and recovery using log-based approaches.
database recovery techniques
database recovery techniques Kalhan Liyanage Database recovery techniques restore the database to its most recent consistent state before a failure. There are three states: pre-failure consistency, failure occurrence, and post-recovery consistency. Recovery approaches include steal/no-steal and force/no-force, while update strategies are deferred or immediate. Shadow paging maintains current and shadow tables to recover pre-transaction states. The ARIES algorithm analyzes dirty pages, redoes committed transactions, and undoes uncommitted ones. Disk crash recovery uses log/database separation or backups.
Database Systems - SQL - DCL Statements (Chapter 3/4)
Database Systems - SQL - DCL Statements (Chapter 3/4)Vidyasagar Mundroy The document discusses the DCL (data control language) statements in SQL. It covers connection management statements used to connect to and disconnect from databases. It describes transaction management statements like START TRANSACTION, COMMIT, and ROLLBACK used to control transactions. It also covers access control statements like GRANT and REVOKE used to manage user privileges and access to database objects.
ER-Model-ER Diagram
ER-Model-ER DiagramSaranya Natarajan Here are the entity relationship diagrams and tables for the car insurance company database:
(a) E-R Diagram:
Person - owns - Car
(1:M)
Car - involved in - Accident
(0:M)
(b) Tables:
person
(driver_id primary key,
name, address)
car
(license primary key,
year, model, driver_id foreign key references person)
accident
(report_number primary key,
date, location)
participated
(driver_id foreign key references person,
license foreign key references car,
report_number foreign key references accident
3 Tier Architecture
3 Tier ArchitectureWebx The document discusses 3-tier architecture, which separates an application into three logical layers - the presentation layer, business logic layer, and data layer. It describes how this architecture evolved from earlier single-tier and dual-tier models. The 3-tier model provides advantages like scalability, reusability, security, and availability. While more complex than 2-tier, it allows for improved performance in medium to large systems by distributing the application across servers. An example is provided of implementing a 3-tier application using ASP.NET with distinct presentation, business, and data access layers.
Overview of physical storage media
Overview of physical storage mediaSrinath Sri - Physical storage media can be classified by access speed, cost per unit of data, and reliability. This includes cache, main memory, flash memory, magnetic disks, optical disks, and magnetic tapes.
- Faster but more expensive media like cache and main memory are primary storage, while magnetic disks represent secondary storage. Tapes and optical disks provide tertiary, offline storage.
- Volatility also differs, with volatile storage like main memory losing data on power loss, while nonvolatile media like disks and flash retain data. The database typically resides on nonvolatile secondary storage for long-term access.
Decomposition using Functional Dependency
Decomposition using Functional DependencyRaj Naik The document discusses functional dependencies and database normalization. It provides examples of functional dependencies and explains key concepts like:
- Functional dependencies define relationships between attributes in a relation.
- Armstrong's axioms are properties used to derive functional dependencies.
- Decomposition aims to eliminate redundancy and anomalies by breaking relations into smaller, normalized relations while preserving information and dependencies.
- A decomposition is lossless if it does not lose any information, and dependency preserving if the original dependencies can be maintained on the decomposed relations.
Shadow paging
Shadow pagingGowriLatha1 The document describes shadow paging, an alternative to log-based recovery for databases. It maintains two page tables during transactions: a current page table and a shadow page table stored in non-volatile storage. This allows recovery of the pre-transaction state if needed. Shadow paging has advantages over logging like no log overhead and trivial recovery, but has higher commit overhead as many pages must be flushed. It also risks data fragmentation and requires garbage collection of old data versions after transactions.
database language ppt.pptx
database language ppt.pptxAnusha sivakumar This document provides information about different types of database languages. It discusses database definition languages (DDL) which are used to define the database structure, data manipulation languages (DML) which are used to retrieve and modify data, data control languages (DCL) which control security and access, and transaction control languages (TCL) which manage transactions. Examples of commands for each language type are provided, such as CREATE, ALTER, and DROP for DDL and SELECT, INSERT, UPDATE, and DELETE for DML.
7 data management design
7 data management designChâu Thanh Chương The document discusses different approaches to data management and persistence in applications, including:
1) Storing objects directly in files or using a database management system (DBMS) to store data in tables while hiding physical storage details.
2) Design questions around persistence such as whether to use files, a relational or object DBMS, and how to structure the logical and physical layers.
3) Common techniques for mapping objects to relational databases like normalization, handling inheritance and associations.
4) Alternatives for designing data management classes like adding persistence methods to classes or using broker classes.
Type of database models
Type of database modelsSanthiNivas This document discusses different types of database models including high-level, representation, and low-level models. It describes the entity-relationship model as a high-level model that focuses on entities, attributes, and relationships without representation concerns. The relational model and hierarchical model are presented as representation models that describe how data is physically structured and stored. Key aspects of each model like structure, terminology, advantages, and disadvantages are summarized.
08. Object Oriented Database in DBMS
08. Object Oriented Database in DBMSkoolkampus The document discusses object-oriented databases and the need for complex data types that traditional databases cannot support well. It covers the core concepts of the object-oriented data model including objects, classes, inheritance, and object identity. Key advantages of the object-oriented approach include its ability to model complex relationships and enable persistence of programming language objects.
Similar to Importance of database design (1) (20)
Large scale sql server best practices
Large scale sql server best practicesmprabhuram This document provides recommendations for optimizing the performance and manageability of partitioned fact tables in a data warehouse. Some key recommendations include:
- Consider partitioning large fact tables on the date key to enable features like faster queries on single partitions, easier data loading and unloading, and partition elimination.
- Build clustered indexes on the date key of fact tables and foreign keys of dimensions to support efficient date-based and dimension-based queries.
- Choose partition grains like months, quarters or years and avoid designs with only a few frequently accessed partitions.
- Write queries with predicates on the date key partition column to allow partition elimination for faster query performance.
Optimize access
Optimize accessAla Esmail This article provides tips for improving the performance of Microsoft Access 2007 applications. Some key tips include splitting the database into separate application and data files, compacting the database regularly, limiting fields returned in queries, adding indexes to fields used for criteria or joins, and using temporary tables to store intermediate query results rather than running the same queries repeatedly. Following these tips can help optimize database, query, form and report performance.
NoSQL - A Closer Look to Couchbase
NoSQL - A Closer Look to CouchbaseMohammad Shaker The document discusses database design and NoSQL databases like Couchbase. It covers topics such as data structures, the differences between relational and non-relational databases, handling conflicts in Couchbase, and optimizing performance in Couchbase by using efficient document structures and SDK methods. Effective document structures and database configuration can improve the read and write efficiency of Couchbase applications.
Ms access tutorial
Ms access tutorialminga48 This document provides an overview of building a database in Microsoft Access 2007. It discusses planning the database structure, deciding on a purpose, listing the data to store, and the main parts of database design like fields, tables, primary keys, and data types. It also covers creating relationships between tables, using queries to extract data, and includes self-assessment quizzes to test the reader's understanding.
6.2 software
6.2 softwarefahrie_khai_sab_taufiq A field is a category of information in a table represented by a column. A record consists of related fields arranged in a row. A file is a named collection of data organized into tables, queries, forms and reports that together form a database.
Architectural anti patterns_for_data_handling
Architectural anti patterns_for_data_handlingGleicon Moraes This document discusses architectural anti-patterns related to data distribution and handling failures. It describes issues like using tables for queues, logs, or caches instead of the proper tools. Alternatives presented include document databases, key-value stores, message queues, and avoiding over-normalization. The document advocates simplifying data models and thinking about architecture and data flow rather than only databases.
Data Warehouse Best Practices
Data Warehouse Best PracticesEduardo Castro This document discusses best practices for building large scale relational data warehouses. It recommends partitioning large fact tables, building indexes on the date key of fact tables and foreign keys of dimension tables. Choosing the right partition grain and designing dimension tables efficiently with surrogate keys is also discussed. Maintaining data using sliding window techniques and efficiently loading, deleting, and backing up data are covered.
IS L03 - Database Management
IS L03 - Database ManagementJan Wong This document provides an overview of database management systems and different types of databases. It discusses how databases store and organize data, the roles of database analysts and administrators, features of database management systems like data maintenance, security, and backups. It also introduces different data models including relational, object-oriented, and multi-dimensional databases, comparing their data storage, specialties, benefits, and sample applications.
Introduction to database with ms access(DBMS)
Introduction to database with ms access(DBMS)07HetviBhagat A database is an organized collection of structured data stored electronically in a computer system. The document discusses database components including hardware, software, data, procedures, and access languages. It provides examples of database systems like MS Access and how it can be used to create tables, enter and query data, and perform other operations. Key database terms are defined such as entities, attributes, relationships, and database administrators' roles and responsibilities. Advantages and disadvantages of database management systems are also outlined.
Introduction to database with ms access.hetvii
Introduction to database with ms access.hetvii07HetviBhagat A database is usually controlled by a database management system (DBMS). MS Access is a popular DBMS that allows users to create and manage databases. The document discusses various components of a database such as tables, queries, forms and reports. It provides information on how to create an MS Access database, add tables, enter data, create relationships between tables, write queries to extract data, and build forms and reports. The key aspects covered are data modeling using entity relationship diagrams, normalizing data to reduce redundancy, and performing common database operations like importing, exporting and analyzing data in MS Access.
ppt on open office.org
ppt on open office.orgDeepansh Goel This document provides information about databases and how to use OpenOffice Base. It discusses:
1) How databases work by centralizing data in one location so all applications can access the same updated information.
2) The advantages of databases like reducing data redundancy, controlling inconsistencies, and facilitating data sharing.
3) The differences between flat and relational databases and that OpenOffice Base is a relational database management system (RDBMS).
4) The basic functions of OpenOffice Base including creating tables, setting primary keys, opening existing databases, and writing queries.
Database.docx
Database.docxRUBAB79 Data, information, and knowledge are related but distinct concepts. A database is a collection of structured data that allows for easier access, storage, and retrieval of data. There are many types of databases including relational, NoSQL, hierarchical, distributed, and cloud databases. Each type has advantages like security, scalability, and accessibility as well as disadvantages like complexity, costs, and lack of standardization. Relational databases use tables with rows and columns while NoSQL databases store data in more flexible ways.
Operate Database Applicationidentify ntrk handtools.pptx
Operate Database Applicationidentify ntrk handtools.pptxedget1 identify ntrk handtools.pptxidentify ntrk handtools.pptx
Information Systems For Business and BeyondChapter 4Data a.docx
Information Systems For Business and BeyondChapter 4Data a.docxjaggernaoma Information Systems For Business and Beyond
Chapter 4
Data and Databases
IST
5500
1
Objectives
Describe differences between data, info & knowledge
Define database & identify steps to create one
Describe role of a database management system
Describe characteristics of a data warehouse; and
Define data mining & describe its role in an organization
2
Data, Information & Knowledge
Data: raw bits & pieces of info
Quantitative or qualitative
Data alone not useful
Needs context to be information
Aggregate & analyze: knowledge
Knowledge used for decisions
Wisdom includes experience!
NOTE: We will not be discussing older, hierarchical databases during this class
Databases
Relational database most popular
Limit our discussion to them
Examples: MS Access, MySQL & Oracle
Data organized into one or more tables
Each table contains set of fields
A record is one instance of a set of fields
Tables related by one or more fields: primary key
Database Design
Needs, requirements & goals?
Define data requiring tracking
Determine tables needed
Specifically which fields
Data to which they will relate
Establish primary key (unique)
Normalize: avoid duplicates & achieve flexibility
Designing a Database
Example: a university wants to create an information system to track participation in student clubs
Goal to give insight into how university funds clubs
Track number of club members & club activeness
Must keep track of the clubs, members & events
Following tables needed:
Clubs: club name, club president, short description of club
Students: student name, e-mail, year of birth
Memberships: correlates students with clubs, any given student can join multiple clubs
Events: when clubs meet & attendance
Designing a Database continued
Primary key must be selected for each table to create a relationship
unique identifier for each record in a table
Designing a Database Table Details
Designing a Database Table Details cont.
Designing a Database continued
Normalization
Design database in a way that:
reduces duplication of data between tables
gives table as much flexibility as possible
Purpose of creating Memberships table separate from Students & Clubs tables
Makes it simple to change design without major modifications to existing structure
Data Types
Each field in a database table needs a data type
Text, Number, Yes/No, Date/Time, Currency, Object, etc.
Importance of properly defined data types
tells database what functions can be performed
proper amount of storage space is allocated for data
Data Types: Assigned by Fields
Text – generally under 256 characters
Numbers* – usually different types
Yes/No – decisions (*special type)
Date/Time – formats (*special type)
Currency – types (*special type)
Paragraphs - allows text over 256
Objects – images, music, etc.
Database Tables 1NF (1st normal form)
Database Demonstration
Time permi.
01 Microsoft Access
01 Microsoft AccessLaguna State Polytechnic University This document outlines topics for working with data in an Access database, including searching for and replacing text, entering data accurately using AutoCorrect, editing text, and arranging columns. Specific techniques are described such as finding and refining searches, enabling AutoCorrect, selecting, deleting and inserting text, and checking spelling options. The document provides an outline for a training course on working with data in an Access database.
Info systems databases
Info systems databasesMR Z The document provides an overview of information systems and databases as covered in the HSC course. It discusses different types of information systems and focuses on organizing, storing, and retrieving data with database systems. It describes skills needed to analyze database information systems and provides examples to practice these skills. Finally, it covers topics like database design, data storage and retrieval methods, and some social and ethical issues related to information systems.
Database concepts
Database conceptsFLYMAN TECHNOLOGY LIMITED This document provides an introduction to database concepts. It defines what a database is and gives examples. It also defines key database terminology like data, fields, records, tables, and relationships. Additionally, it discusses the history of databases from manual systems to file processing systems to modern database management systems. DBMSs allow for centralized, organized data storage and retrieval and overcome many of the limitations of earlier data storage methods. The document also briefly describes different types of database models and relational database concepts like tables, primary keys, and foreign keys.
Cs437 lecture 1-6
Cs437 lecture 1-6Aneeb_Khawar This document provides an overview and schedule for a course on Data Warehousing and Mining. The course will cover topics like data warehousing, data cubes, OLAP, data normalization and de-normalization, and various data mining techniques. A tentative schedule is provided that includes lectures on introduction, data warehousing motivation, indexing, building warehouses, mining techniques like regression, clustering, decision trees. Textbook references and grading plan are also outlined.
Hadoop introduction , Why and What is Hadoop ?
Hadoop introduction , Why and What is Hadoop ?sudhakara st Hadoop Introduction
you connect with us: http://www.linkedin.com/profile/view?id=232566291&trk=nav_responsive_tab_profile
Ad
More from yhen06 (20)
National book week celebration
National book week celebrationyhen06 National Book Week will be celebrated from November 29, 2011 with activities including a poster making contest to promote reading and books.
Markey encyclopedia
Markey encyclopediayhen06 An encyclopedia is a type of reference work that provides summaries of information on various topics. It is divided into articles or entries that are usually accessed alphabetically. Some key characteristics of encyclopedias include their subject matter, scope, hierarchical organization, and production by subject experts. The first major encyclopedias date back to ancient times, but the modern printed encyclopedia emerged in the 18th century. In the digital age, encyclopedias have been published online and as CD-ROMs, allowing for new methods of organization and updating content.
Informational web pages
Informational web pagesyhen06 An informational database or webpage contains factual information intended to educate readers. It is created by authorities on the topic who strive for accuracy, objectivity, and currency. Libraries and information centers play an important role by creating informational web pages and databases to disseminate relevant information to their audiences in a way that saves time and money compared to print or paid online resources. The goal is to provide easy access to factual information on various topics.
Indexing languages (2)
Indexing languages (2)yhen06 Indexing languages help users discriminate between terms and reduce ambiguity. They consist of controlled vocabularies and rules for their use to assist both indexers and searchers. Indexing languages provide consistency in indexing and searching through the control of synonyms and specification of related, broader, and narrower terms.
Hardware & software
Hardware & softwareyhen06 This document summarizes computer storage, output, and communication hardware. It describes units of storage like bits, bytes, kilobytes and larger units. Primary storage is RAM, and secondary storage includes tape, diskettes, hard disks, optical disks, solid state drives and mass storage devices. Output devices are monitors and printers like dot matrix, inkjet and laser printers. Communication hardware allows data transfer, including modems over phone lines, fax-modems, network interface cards for wired and wireless connections.
Database system environment ppt.
Database system environment ppt.yhen06 The document discusses the key components of a database system environment, including hardware, software, people, procedures, and data. It describes hardware as the physical devices like computers. It identifies three types of software: operating systems, database management systems (DBMS), and application programs. It outlines five types of users: system administrators, database administrators, database designers, system analysts/programmers, and end users. It states procedures govern the design and use of the database system. Finally, it notes data is the collection of facts stored in the database from which information is generated.
Dictionary aizel
Dictionary aizelyhen06 The document discusses different types of dictionaries including: unabridged dictionaries which contain over 265,000 words and cover word histories and usages; abridged dictionaries which contain 150,000-250,000 words and focus on common words; reduced word dictionaries containing under 60,000 words; specialized dictionaries focused on a specific topic like American regional English or crossword puzzles; etymological dictionaries tracing word development over time; slang dictionaries defining informal terms; synonym and antonym dictionaries; dictionaries of abbreviations and acronyms; subject dictionaries explaining terms in specific fields; foreign language dictionaries; biographical dictionaries providing information on people's lives; and retrospective biographical dictionaries providing historical biographical information. Examples are given for each type
Book of days and first - aubrey
Book of days and first - aubreyyhen06 The document discusses two types of books: Books of Days and Books of Firsts. Books of Days are diaries that record daily events connected to the calendar year, seasons, and religious holidays. The Chambers Book of Days from 1864 by Robert Chambers was an elaborate compilation on these topics. Books of Firsts describe pioneering innovations and achievements by documenting the first occurrences of different events. Examples provided include the first balloon flight across the Niagara River in 1859 and the first light bulb demonstration in 1879. The Scholastic Book of Firsts covers over 500 firsts across various subjects throughout history.
Bibliographies (2)
Bibliographies (2)yhen06 A bibliography is a list of sources used or cited in a research paper or other work. It provides essential information about each source, including author, title, publisher, and date. There are several types of bibliographies, including systematic enumerative bibliographies that list all published works on a topic, and current selection aids that evaluate recently published reference materials. Bibliographies follow consistent formatting principles and are compiled according to guidelines to ensure accuracy and logical arrangement of sources. Bibliographic utilities and databases provide access to catalog records and shared bibliographic information.
Database system environment ppt.
Database system environment ppt.yhen06 The document discusses the key components of a database system environment: hardware, software, people, procedures, and data. It describes hardware as the physical devices like computers. It explains that software includes operating systems, database management systems (DBMS), and application programs. People in the environment include administrators, designers, analysts, programmers, and end users. Procedures govern how the database system is designed and used. Data refers to the collection of facts stored in the database.
Advantages and disadvantages of digital library
Advantages and disadvantages of digital libraryyhen06 Loertscher suggested several advantages of digital libraries including providing a starting point for all research, supporting distance learning education by providing educational opportunities for all students, and allowing patrons to access information from any location without needing a particular device. However, digital libraries also have disadvantages such as access being an equity issue, too many resources making it difficult to evaluate sources, and obsolescence of books over time.
Importance of data model
Importance of data modelyhen06 Data models can facilitate communication between designers, programmers, and users. A well-developed data model can improve understanding of an organization. Data models are a communication tool that represent different types of relationships in a database. Common data models include hierarchical, network, relational, entity-relationship, and object-oriented models. Each model has advantages like conceptual simplicity and flexibility as well as disadvantages like complexity and implementation limitations.
General factbooks
General factbooksyhen06 The Guinness Book of World Records began in 1955 as a marketing project by Hugh Beaver. It contains human achievements and natural phenomena. It became a surprise international bestseller. The book and its spinoffs are still published today by Guinness World Records and Ripley Entertainment. Ripley's Believe It or Not franchise was founded in 1918 and includes books, comics, TV shows, and museums displaying strange facts and artifacts. Both franchises entertain audiences by documenting bizarre records and unusual facts.
Evaluating different sources maam she
Evaluating different sources maam sheyhen06 This document discusses various factors to consider when evaluating information sources for purchase or licensing by a library. It addresses criteria like scope, authority, treatment of the topic, physical format, cost, and special features. Accuracy, objectivity, currency, and suitability for the intended audience are some attributes examined to judge source reliability and authority. Pricing models, equipment needs, and staff support are also outlined as financial aspects to evaluate for electronic and online resources.
Catalla & cea
Catalla & ceayhen06 The document discusses using surrogate primary keys when natural keys are unsuitable. It provides an example of an event booking database that lacks a simple natural key. A surrogate key like (DATE, TIME_START, ROOM) is suggested for the EVENT table. This creates a many-to-many relationship with RESOURCES modeled by a composite EVNTRSC entity. However, the lengthy composite EVNTRSC primary key could make implementation complex. Surrogate keys are an accepted practice that helps when natural keys are unsuitable, but constraints must ensure the candidate key performs properly.
Project proposal final presentation
Project proposal final presentationyhen06 This document discusses organizing a library's vertical file collection of newspaper clippings. As a student assistant, the author finds it difficult to help patrons find specific clippings because they are not fully indexed in the system. The author proposes creating a database to better organize the vertical file collection. The database would include fields for the clipping ID number, title, author, date, and status information for tracking use by students. Advantages of the database include easier access and more flexible data retrieval than a manual filing system, while disadvantages include potential issues from power loss or changes requiring updates to all data input.
web tech
web techyhen06 A blog is a discussion or information website consisting of posts displayed in reverse chronological order. Blogs are created by individuals or organizations and allow commenting. They generally contain text, images, and personal opinions. Key components of blogs include posts, comments, archives to access older posts, categories to organize posts, and syndication formats like RSS and Atom that allow users to subscribe to blog updates. Libraries can use blogs to promote their resources, services, and get feedback from visitors.
Ad
Recently uploaded (20)
Build Your Own Copilot & Agents For Devs
Build Your Own Copilot & Agents For DevsBrian McKeiver May 2nd, 2025 talk at StirTrek 2025 Conference.
Transcript: #StandardsGoals for 2025: Standards & certification roundup - Tec...
Transcript: #StandardsGoals for 2025: Standards & certification roundup - Tec...BookNet Canada Book industry standards are evolving rapidly. In the first part of this session, we’ll share an overview of key developments from 2024 and the early months of 2025. Then, BookNet’s resident standards expert, Tom Richardson, and CEO, Lauren Stewart, have a forward-looking conversation about what’s next.
Link to recording, presentation slides, and accompanying resource: https://bnctechforum.ca/sessions/standardsgoals-for-2025-standards-certification-roundup/
Presented by BookNet Canada on May 6, 2025 with support from the Department of Canadian Heritage.
Enhancing ICU Intelligence: How Our Functional Testing Enabled a Healthcare I...
Enhancing ICU Intelligence: How Our Functional Testing Enabled a Healthcare I...Impelsys Inc. Impelsys provided a robust testing solution, leveraging a risk-based and requirement-mapped approach to validate ICU Connect and CritiXpert. A well-defined test suite was developed to assess data communication, clinical data collection, transformation, and visualization across integrated devices.
How Can I use the AI Hype in my Business Context?
How Can I use the AI Hype in my Business Context?Daniel Lehner 𝙄𝙨 𝘼𝙄 𝙟𝙪𝙨𝙩 𝙝𝙮𝙥𝙚? 𝙊𝙧 𝙞𝙨 𝙞𝙩 𝙩𝙝𝙚 𝙜𝙖𝙢𝙚 𝙘𝙝𝙖𝙣𝙜𝙚𝙧 𝙮𝙤𝙪𝙧 𝙗𝙪𝙨𝙞𝙣𝙚𝙨𝙨 𝙣𝙚𝙚𝙙𝙨?
Everyone’s talking about AI but is anyone really using it to create real value?
Most companies want to leverage AI. Few know 𝗵𝗼𝘄.
✅ What exactly should you ask to find real AI opportunities?
✅ Which AI techniques actually fit your business?
✅ Is your data even ready for AI?
If you’re not sure, you’re not alone. This is a condensed version of the slides I presented at a Linkedin webinar for Tecnovy on 28.04.2025.
Special Meetup Edition - TDX Bengaluru Meetup #52.pptx
Special Meetup Edition - TDX Bengaluru Meetup #52.pptxshyamraj55 We’re bringing the TDX energy to our community with 2 power-packed sessions:
🛠️ Workshop: MuleSoft for Agentforce
Explore the new version of our hands-on workshop featuring the latest Topic Center and API Catalog updates.
📄 Talk: Power Up Document Processing
Dive into smart automation with MuleSoft IDP, NLP, and Einstein AI for intelligent document workflows.
Cyber Awareness overview for 2025 month of security
Cyber Awareness overview for 2025 month of securityriccardosl1 Cyber awareness training educates employees on risk associated with internet and malicious emails
AI EngineHost Review: Revolutionary USA Datacenter-Based Hosting with NVIDIA ...
AI EngineHost Review: Revolutionary USA Datacenter-Based Hosting with NVIDIA ...SOFTTECHHUB I started my online journey with several hosting services before stumbling upon Ai EngineHost. At first, the idea of paying one fee and getting lifetime access seemed too good to pass up. The platform is built on reliable US-based servers, ensuring your projects run at high speeds and remain safe. Let me take you step by step through its benefits and features as I explain why this hosting solution is a perfect fit for digital entrepreneurs.
Into The Box Conference Keynote Day 1 (ITB2025)
Into The Box Conference Keynote Day 1 (ITB2025)Ortus Solutions, Corp This is the keynote of the Into the Box conference, highlighting the release of the BoxLang JVM language, its key enhancements, and its vision for the future.
tecnologias de las primeras civilizaciones.pdf
tecnologias de las primeras civilizaciones.pdffjgm517 descaripcion detallada del avance de las tecnologias en mesopotamia, egipto, roma y grecia.
Big Data Analytics Quick Research Guide by Arthur Morgan
Big Data Analytics Quick Research Guide by Arthur MorganArthur Morgan This is a Quick Research Guide (QRG).
QRGs include the following:
- A brief, high-level overview of the QRG topic.
- A milestone timeline for the QRG topic.
- Links to various free online resource materials to provide a deeper dive into the QRG topic.
- Conclusion and a recommendation for at least two books available in the SJPL system on the QRG topic.
QRGs planned for the series:
- Artificial Intelligence QRG
- Quantum Computing QRG
- Big Data Analytics QRG
- Spacecraft Guidance, Navigation & Control QRG (coming 2026)
- UK Home Computing & The Birth of ARM QRG (coming 2027)
Any questions or comments?
- Please contact Arthur Morgan at [email protected].
100% human made.
HCL Nomad Web – Best Practices und Verwaltung von Multiuser-Umgebungen
HCL Nomad Web – Best Practices und Verwaltung von Multiuser-Umgebungenpanagenda Webinar Recording: https://www.panagenda.com/webinars/hcl-nomad-web-best-practices-und-verwaltung-von-multiuser-umgebungen/
HCL Nomad Web wird als die nächste Generation des HCL Notes-Clients gefeiert und bietet zahlreiche Vorteile, wie die Beseitigung des Bedarfs an Paketierung, Verteilung und Installation. Nomad Web-Client-Updates werden “automatisch” im Hintergrund installiert, was den administrativen Aufwand im Vergleich zu traditionellen HCL Notes-Clients erheblich reduziert. Allerdings stellt die Fehlerbehebung in Nomad Web im Vergleich zum Notes-Client einzigartige Herausforderungen dar.
Begleiten Sie Christoph und Marc, während sie demonstrieren, wie der Fehlerbehebungsprozess in HCL Nomad Web vereinfacht werden kann, um eine reibungslose und effiziente Benutzererfahrung zu gewährleisten.
In diesem Webinar werden wir effektive Strategien zur Diagnose und Lösung häufiger Probleme in HCL Nomad Web untersuchen, einschließlich
- Zugriff auf die Konsole
- Auffinden und Interpretieren von Protokolldateien
- Zugriff auf den Datenordner im Cache des Browsers (unter Verwendung von OPFS)
- Verständnis der Unterschiede zwischen Einzel- und Mehrbenutzerszenarien
- Nutzung der Client Clocking-Funktion
IEDM 2024 Tutorial2_Advances in CMOS Technologies and Future Directions for C...
IEDM 2024 Tutorial2_Advances in CMOS Technologies and Future Directions for C...organizerofv IEDM 2024 Tutorial2
The Evolution of Meme Coins A New Era for Digital Currency ppt.pdf
The Evolution of Meme Coins A New Era for Digital Currency ppt.pdfAbi john Analyze the growth of meme coins from mere online jokes to potential assets in the digital economy. Explore the community, culture, and utility as they elevate themselves to a new era in cryptocurrency.
Massive Power Outage Hits Spain, Portugal, and France: Causes, Impact, and On...
Massive Power Outage Hits Spain, Portugal, and France: Causes, Impact, and On...Aqusag Technologies In late April 2025, a significant portion of Europe, particularly Spain, Portugal, and parts of southern France, experienced widespread, rolling power outages that continue to affect millions of residents, businesses, and infrastructure systems.
Complete Guide to Advanced Logistics Management Software in Riyadh.pdf
Complete Guide to Advanced Logistics Management Software in Riyadh.pdfSoftware Company Explore the benefits and features of advanced logistics management software for businesses in Riyadh. This guide delves into the latest technologies, from real-time tracking and route optimization to warehouse management and inventory control, helping businesses streamline their logistics operations and reduce costs. Learn how implementing the right software solution can enhance efficiency, improve customer satisfaction, and provide a competitive edge in the growing logistics sector of Riyadh.
Quantum Computing Quick Research Guide by Arthur Morgan
Quantum Computing Quick Research Guide by Arthur MorganArthur Morgan This is a Quick Research Guide (QRG).
QRGs include the following:
- A brief, high-level overview of the QRG topic.
- A milestone timeline for the QRG topic.
- Links to various free online resource materials to provide a deeper dive into the QRG topic.
- Conclusion and a recommendation for at least two books available in the SJPL system on the QRG topic.
QRGs planned for the series:
- Artificial Intelligence QRG
- Quantum Computing QRG
- Big Data Analytics QRG
- Spacecraft Guidance, Navigation & Control QRG (coming 2026)
- UK Home Computing & The Birth of ARM QRG (coming 2027)
Any questions or comments?
- Please contact Arthur Morgan at [email protected].
100% human made.
AI Changes Everything – Talk at Cardiff Metropolitan University, 29th April 2...
AI Changes Everything – Talk at Cardiff Metropolitan University, 29th April 2...Alan Dix Talk at the final event of Data Fusion Dynamics: A Collaborative UK-Saudi Initiative in Cybersecurity and Artificial Intelligence funded by the British Council UK-Saudi Challenge Fund 2024, Cardiff Metropolitan University, 29th April 2025
https://alandix.com/academic/talks/CMet2025-AI-Changes-Everything/
Is AI just another technology, or does it fundamentally change the way we live and think?
Every technology has a direct impact with micro-ethical consequences, some good, some bad. However more profound are the ways in which some technologies reshape the very fabric of society with macro-ethical impacts. The invention of the stirrup revolutionised mounted combat, but as a side effect gave rise to the feudal system, which still shapes politics today. The internal combustion engine offers personal freedom and creates pollution, but has also transformed the nature of urban planning and international trade. When we look at AI the micro-ethical issues, such as bias, are most obvious, but the macro-ethical challenges may be greater.
At a micro-ethical level AI has the potential to deepen social, ethnic and gender bias, issues I have warned about since the early 1990s! It is also being used increasingly on the battlefield. However, it also offers amazing opportunities in health and educations, as the recent Nobel prizes for the developers of AlphaFold illustrate. More radically, the need to encode ethics acts as a mirror to surface essential ethical problems and conflicts.
At the macro-ethical level, by the early 2000s digital technology had already begun to undermine sovereignty (e.g. gambling), market economics (through network effects and emergent monopolies), and the very meaning of money. Modern AI is the child of big data, big computation and ultimately big business, intensifying the inherent tendency of digital technology to concentrate power. AI is already unravelling the fundamentals of the social, political and economic world around us, but this is a world that needs radical reimagining to overcome the global environmental and human challenges that confront us. Our challenge is whether to let the threads fall as they may, or to use them to weave a better future.
Mobile App Development Company in Saudi Arabia
Mobile App Development Company in Saudi ArabiaSteve Jonas EmizenTech is a globally recognized software development company, proudly serving businesses since 2013. With over 11+ years of industry experience and a team of 200+ skilled professionals, we have successfully delivered 1200+ projects across various sectors. As a leading Mobile App Development Company In Saudi Arabia we offer end-to-end solutions for iOS, Android, and cross-platform applications. Our apps are known for their user-friendly interfaces, scalability, high performance, and strong security features. We tailor each mobile application to meet the unique needs of different industries, ensuring a seamless user experience. EmizenTech is committed to turning your vision into a powerful digital product that drives growth, innovation, and long-term success in the competitive mobile landscape of Saudi Arabia.
Andrew Marnell: Transforming Business Strategy Through Data-Driven Insights
Andrew Marnell: Transforming Business Strategy Through Data-Driven InsightsAndrew Marnell With expertise in data architecture, performance tracking, and revenue forecasting, Andrew Marnell plays a vital role in aligning business strategies with data insights. Andrew Marnell’s ability to lead cross-functional teams ensures businesses achieve sustainable growth and operational excellence.
Importance of database design (1)
- 2. Database design is the process of producing a detailed data model of a database.
- 3. This logical data model contains all the needed logical and physical design choices and physical storage parameters needed to generate a design in a Data Definition Language, which can then be used to create a database.
- 4. A fully attributed data model contains detailed attributes for each entity.
- 5. Usually, the designer must: Determine the relationships between the different data elements. Superimpose a logical structure upon the data on the basis of these relationships.
- 6. THE DESIGN PROCESS Determine the purpose of the database - This helps prepare for the remaining steps.
- 7. Find and organize the information required - Gather all of the types of information to record in the database, such as product name and order number.
- 8. Divide the information into tables - Divide information items into major entities or subjects, such as Products or Orders. Each subject then becomes a table.
- 9. Turn information items into columns - Decide what information needs to stored in each table. Each item becomes a field, and is displayed as a column in the table. For example, an Employees table might include fields such as Last Name and Hire Date.
- 10. Specify primary keys - Choose each table’s primary key. The primary key is a column that is used to uniquely identify each row.
- 11. Setup the table relationships - Look at each table and decide how the data in one table is related to the data in other tables. Add fields to tables or create new tables to clarify the relationships, as necessary.
- 12. Refine the design - Analyze the design for errors. Create tables and add a few records of sample data. Check if results come from the tables as expected. Make adjustments to the design, as needed.
- 13. Apply the normalization rules - Apply the data normalization rules to see if tables are structured correctly. Make adjustments to the tables
- 14. THE TABLES
- 15. The core table of the database is Incident. This tracks the bulk of information submitting about a particular incident. For example, under injuries there might be multiple parts of the body that were injured. There are several ways to deal with this.
- 16. Solution Pros Cons Add one field for Keeps all the data in one Makes the table extremely large. Adding each item table. a new piece of information to be stored means adding an entirely new field. If there are multiple copies of the database in use synchronization becomes extremely difficult. Many database fields will be empty. Poor database design practice. Less efficient database storage. Allow multiple Keeps all the data in one Extremely poor database design pieces of data to be table. practice. Makes querying the database entered in each for incidents that meet certain criteria field. extremely difficult and time consuming. Create Child Tables Best practice for database Spreads data out over multiple tables design. Allows for easily which means that greater database adding new types of expertise is needed to develop and work information. Does not with the data. create a "bulky" core table. More efficient for querying the database for incidents that meet certain criteria.
- 17. The recommendation is to create an idb_Incidents Table to handle the information that is discrete (that is can only have one value such as the date of the incident) and create a series of Child tables that store information where there may be multiple pieces of data.
- 18. This makes the database much more extendable. If new information needs to be collected, either a new field would be added to the idb_Incidents Table or a new Child table could be created.