Dwh lecture slides-week1
Download as PPTX, PDF0 likes164 views
This document provides an introduction to databases, covering what a database is, what online transaction processing (OLTP) systems are and their strengths and weaknesses, an introduction to different keys used in databases, an overview of the entity-relationship (ER) model, and database normalization.
1 of 2
Download to read offline
Recommended
Tema 5 unificacion italiana y alemana
Tema 5 unificacion italiana y alemanaM Angeles Carrasco Miranda El documento describe la unificación de Italia y Alemania en el siglo XIX. La unificación italiana estuvo liderada por Cavour, Garibaldi y Víctor Manuel II, resultando en la creación de un estado italiano en 1860. La unificación alemana estuvo liderada por Bismarck y Guillermo I de Prusia, quienes derrotaron a Austria en la guerra austro-prusiana de 1866 y a Francia en la guerra franco-prusiana de 1871, lo que permitió la creación del Imperio alemán bajo lideraz
Dwh lecture slidesweek7&8
Dwh lecture slidesweek7&8Shani729 This document discusses the need for dimensional modeling (DM) as a way to simplify complex entity-relationship (ER) data models optimized for online transaction processing (OLTP). ER modeling results in many normalized tables that are difficult for users to understand and query across. DM addresses this by collapsing dimensions into single tables and representing all data in a star schema with a central fact table linked to dimensional tables. This star schema structure is simpler for users to understand and allows for faster querying of data.
Aids knowing no boundaries in 3 rd world countries
Aids knowing no boundaries in 3 rd world countriestuikings The document discusses the global impact of HIV/AIDS, particularly in Africa and other developing regions. It provides statistics on HIV prevalence, transmission methods, symptoms, and impact. Key points include:
- HIV/AIDS has had a devastating impact in sub-Saharan Africa and is a potential disaster in Papua New Guinea. Prevalence rates in Africa soared from 1988 to 2003.
- The virus is primarily spread through sexual contact, mother-to-child transmission, and shared needles. Common symptoms include headaches, night sweats, and diarrhea.
- HIV/AIDS weakens populations and economies by primarily affecting young, working-age adults. It exacerbates issues like poverty, crime and lack of
Dwh lecture slides-week3&4
Dwh lecture slides-week3&4Shani729 The document discusses why organizations implement data warehouses. It provides several key reasons:
1) Data recording and storage is growing exponentially in almost every industry, creating huge amounts of operational data. A data warehouse provides a platform for consolidated historical data analysis to support strategic decision making.
2) Knowledge workers want to analyze available data to extract useful information and insights to support decision making. This requires intelligent decision support capabilities.
3) In today's competitive environment, a data warehouse is a valuable marketing and business intelligence tool that can help organizations better understand customer needs and behavior to improve customer retention.
Dwh lecture slides-week15
Dwh lecture slides-week15Shani729 The document discusses data mining techniques for association rule mining. It defines association rules as relationships of the form A implies B, where A and B are itemsets in transactional data. The key steps are finding frequent itemsets that meet a minimum support threshold, and generating association rules from those itemsets that meet a minimum confidence threshold. The Apriori algorithm is described as the most common approach for efficiently finding all frequent itemsets in an iterative way by pruning itemsets with subsets that are not frequent.
Baromètre Santé 2015 Deloitte / Ifop
Baromètre Santé 2015 Deloitte / IfopRémy TESTON 4ème édition de l'étude Santé de Deloitte, réalisée avec l'Ifop, qui questionne les Français sur leur consommation de soins et de services santé
Future work on adaptive computer-assisted translation (拋磚引玉; throwing brick t...
Future work on adaptive computer-assisted translation (拋磚引玉; throwing brick t...Mike Tian-Jian Jiang This document discusses various challenges and approaches in computer-assisted translation, including:
1) Issues with statistical machine translation models being overly reliant on large datasets and statistics.
2) Problems that can arise from errors propagating through machine translation systems.
3) The complex many-to-many relationships between source texts and translations that involve mapping texts based on similarity and ranking results.
4) Techniques for machine translation including normalization, stemming, lemmatization, edit distance, and evaluating sentence similarity.
Propuesta
Propuestagrupodetrabajo101 La oficina de inmigración de Quebec invita a colombianos interesados a una conferencia gratuita sobre oportunidades de inmigración a Quebec. La conferencia explicará programas de inmigración, costo de vida, empleo, servicios, cultura y educación. Quebec busca personas dinámicas con estudios o experiencia laboral que hablen o estén dispuestos a aprender francés. La conferencia será en Cartago.
Inventos
InventosDavid Elias El documento habla sobre varios objetos e inventos a través de la historia. Describe la cama y cómo ha evolucionado desde surcos en el suelo hasta camas modernas. Explica también los raíles de trenes, su función de guiar los trenes de forma segura, y otros objetos como el botijo, el paracaídas, el walkie-talkie y más.
Tecnologías de puntajfhhhh
Tecnologías de puntajfhhhhsebanico1936 Este documento presenta breves descripciones de varias tecnologías emergentes como la nanotecnología, bioingeniería, biotecnología, robótica y automatización. Explica que la nanotecnología involucra el control y manipulación de la materia a escala nanométrica para crear nuevos materiales y sistemas. La bioingeniería aplica principios de ingeniería a problemas biológicos y médicos. Y la biotecnología usa sistemas biológicos para crear o modificar product
Frequent itemset mining using pattern growth method
Frequent itemset mining using pattern growth methodShani729 The document discusses the FP-growth algorithm for mining frequent patterns without candidate generation. It begins with an overview of the performance bottlenecks of the Apriori algorithm and introduces the FP-growth approach. The key steps of FP-growth include compressing the transaction database into a frequent-pattern tree (FP-tree) structure, and then mining the FP-tree to find all frequent patterns. The mining process recursively constructs conditional FP-trees to decompose the problem into smaller sub-problems without candidate generation. Examples are provided to illustrate the FP-tree construction and pattern mining.
Dwh lecture slides-week 13
Dwh lecture slides-week 13Shani729 The document discusses the process of dimensional modeling from ER diagrams to dimensional models. It outlines a 4 step method: 1) Choose the business process, 2) Choose the grain, 3) Choose the facts, and 4) Choose the dimensions. It describes each step in detail, including choosing an appropriate grain, identifying additive vs. non-additive facts, handling slowly changing dimensions, and the tradeoffs of different approaches to modeling dimensions.
Dwh lecture slides-week10
Dwh lecture slides-week10Shani729 The document describes a 4-step process for dimensional modeling: 1) choose a business process, 2) choose the grain, 3) choose facts, and 4) choose dimensions. It discusses important dimensional modeling concepts like grain, facts, dimensions, and hierarchies. It also covers considerations for choosing an appropriate grain like granularity, expressiveness, and hardware trade-offs. Aggregation can hide crucial facts but works for repetitive queries if the grain is justified. Dimensions should be single-valued attributes during transactions but can sometimes be multi-valued, requiring handling of problems. Dimensions must be applicable to the chosen grain.
Aforismos. parte séptima.
Aforismos. parte séptima.José María Este documento contiene 200 aforismos sobre diversidad funcional escritos por José María Olayo Martínez. Cada aforismo presenta una reflexión breve sobre temas como cometer errores, crear espacios de resistencia o compartir, el victimismo, la empatía, la igualdad de oportunidades, la constitución española, y más.
Indices 02 apr2013055607
Indices 02 apr2013055607Investors Empowered The document provides a snapshot of various Indian stock market indices as of April 2, 2013. It lists the current value, day's high and low, previous close, change from previous close in absolute and percentage terms, and other statistical data for over 30 indices tracking different sectors of the Indian economy. The indices showed mixed performance on the day with some gaining and others declining marginally.
лекц. №13-14 екстер'єр сільськогосподарських тварин
лекц. №13-14 екстер'єр сільськогосподарських тваринЕвгений Баркарь лекц. №13-14 екстер'єр сільськогосподарських тварин
Historia Escolar de mis antepasados
Historia Escolar de mis antepasadosmartamoyagz Este documento presenta las entrevistas realizadas a 5 miembros de la familia de diferentes generaciones sobre sus experiencias educativas. Se comparan aspectos como las asignaturas, el horario, la disciplina, los castigos y las diferencias entre escuelas públicas y privadas a lo largo del tiempo, desde la década de 1930 hasta la actualidad.
Park project
Park projectShyreene Legisma The document describes the amenities and features of H2O Splash-Tacular water park located in Cabuyao, Laguna, Philippines. The water park includes a wave pool, lazy river, water slides, cabanas, picnic areas, and more. It is situated in the heart of Cabuyao and provides a fun escape for families, friends, and others.
Halaman pengesahan
Halaman pengesahanAdul Imau Dokumen tersebut merupakan halaman pengesahan kegiatan KKN-PPM mahasiswa Unlam di desa Ambungan, Tanah Laut. Terdapat 10 mahasiswa yang menyelesaikan kegiatannya selama satu bulan di bawah bimbingan dosen pembimbing dan kerjasama dengan aparat desa.
Dwh lecture slides-week5&6
Dwh lecture slides-week5&6Shani729 This document discusses five principal techniques for de-normalizing data in a data warehouse: collapsing tables, handling many-to-many relationships, splitting tables horizontally and vertically, pre-joining tables, and adding redundant columns. It provides examples and discusses trade-offs for each technique in terms of storage, performance, ease of use, and maintenance. De-normalization can improve query performance but also increases data storage requirements and maintenance effort. Careful consideration of each case is needed to determine if de-normalization provides overall benefits.
Dwh lecture slides-week2
Dwh lecture slides-week2Shani729 This document outlines the approach and summary of a course on data warehousing and mining. The course aims to develop an understanding of relational database concepts and how they apply and break down in very large databases and data warehousing. It will cover topics like online analytical processing, dimensional modeling, extract-transform-load, data quality management, and data mining concepts. The course also provides an overview of important reference books on data warehousing.
Dwh lecture slides-week 12&13
Dwh lecture slides-week 12&13Shani729 This document discusses data warehousing and online analytical processing (OLAP). It begins by explaining the relationship between data warehouses and OLAP, noting that OLAP supports analysis using data stored in a data warehouse. It then discusses different implementations of OLAP, including MOLAP (multidimensional OLAP using pre-aggregated data cubes), ROLAP (relational OLAP using relational databases), and HOLAP (hybrid OLAP combining aspects of MOLAP and ROLAP). It also addresses challenges in implementing OLAP and balancing performance and storage needs.
Online fundraising, 12 nástrojov pre rýchly štart
Online fundraising, 12 nástrojov pre rýchly štartZuzana Suchová 12 nástrojov pre rýchle naštartovanie online fundraisingu.
Informe cimentacion-carpa
Informe cimentacion-carparutenko El documento solicita un informe sobre la cimentación de hormigón armado para una carpa destinada a cubrir una pista de juegos infantiles. La cimentación consiste en 10 zapatas de hormigón armado de 1x1x1m excavadas en un terreno arcilloso y gravoso con alta cohesión. Dado que el terreno tiene una tensión admisible de 2kg/cm2 y soportará cargas ligeras, la cimentación se considera adecuada para su propósito.
Python tutorialfeb152012
Python tutorialfeb152012Shani729 This document provides an overview of the Python programming language. It begins with an introduction to running Python code and output. It then covers Python's basic data types like integers, floats, strings, lists, tuples and dictionaries. The document explains input and file I/O in Python as well as common control structures like if/else statements, while loops and for loops. It also discusses functions as first-class objects in Python that can be defined and passed as parameters. The document provides examples of higher-order functions like map, filter and reduce. Finally, it notes that functions can be defined inside other functions in Python.
Python tutorial
Python tutorialShani729 This document provides an introduction to the Python programming language. It discusses Python versions and distributions, development environments, the Python interactive shell, basic Python data types like lists and strings, and gives examples of working with these data types through indexing, slicing and built-in methods. It also briefly introduces dictionaries and tuples. The document aims to provide newcomers to Python with essential information on the language and getting started.
Interaction design _beyond_human_computer_interaction
Interaction design _beyond_human_computer_interactionShani729 This document provides an overview of interaction design beyond human-computer interaction. It discusses novel forms of interactive products that are embedded with computational power, such as refrigerators that provide recipes based on stored food. It also discusses augmented reality technologies that combine virtual and physical worlds. Examples of direct manipulation virtual environments and interactive virtual worlds are provided. The document discusses how representations can be dynalinked so that changes in one are reflected in another. It provides examples of aesthetically pleasing interactive products and virtual characters. Overall, the document gives a broad introduction to emerging areas of interaction design beyond traditional human-computer interaction, using examples of novel interactive products and technologies.
Fm lecturer 13(final)
Fm lecturer 13(final)Shani729 The document discusses an introduction to formal methods course. It provides biographical information about the instructor, Dr. Naveed Riaz, and outlines some of the key topics to be covered in the course, including formal languages, modeling systems using logic and set theory, and solving logic puzzles using propositional calculus and truth tables. It also gives an example of solving a logic problem about a person on an island of knights and knaves who says "If I am a knight then I will eat my hat".
Lecture slides week14-15
Lecture slides week14-15Shani729 This document discusses distance measures and scales of measurement that are important for k-nearest neighbor classification. It covers two major classes of distance measures - Euclidean and non-Euclidean. It also describes three major scales of measurement for data - nominal, ordinal, and interval scales. It provides examples of different distance functions like Euclidean, Manhattan, cosine, and edit distances. It discusses how the choice of distance measure depends on the type of data and its scale of measurement.
More Related Content
Viewers also liked (17)
Propuesta
Propuestagrupodetrabajo101 La oficina de inmigración de Quebec invita a colombianos interesados a una conferencia gratuita sobre oportunidades de inmigración a Quebec. La conferencia explicará programas de inmigración, costo de vida, empleo, servicios, cultura y educación. Quebec busca personas dinámicas con estudios o experiencia laboral que hablen o estén dispuestos a aprender francés. La conferencia será en Cartago.
Inventos
InventosDavid Elias El documento habla sobre varios objetos e inventos a través de la historia. Describe la cama y cómo ha evolucionado desde surcos en el suelo hasta camas modernas. Explica también los raíles de trenes, su función de guiar los trenes de forma segura, y otros objetos como el botijo, el paracaídas, el walkie-talkie y más.
Tecnologías de puntajfhhhh
Tecnologías de puntajfhhhhsebanico1936 Este documento presenta breves descripciones de varias tecnologías emergentes como la nanotecnología, bioingeniería, biotecnología, robótica y automatización. Explica que la nanotecnología involucra el control y manipulación de la materia a escala nanométrica para crear nuevos materiales y sistemas. La bioingeniería aplica principios de ingeniería a problemas biológicos y médicos. Y la biotecnología usa sistemas biológicos para crear o modificar product
Frequent itemset mining using pattern growth method
Frequent itemset mining using pattern growth methodShani729 The document discusses the FP-growth algorithm for mining frequent patterns without candidate generation. It begins with an overview of the performance bottlenecks of the Apriori algorithm and introduces the FP-growth approach. The key steps of FP-growth include compressing the transaction database into a frequent-pattern tree (FP-tree) structure, and then mining the FP-tree to find all frequent patterns. The mining process recursively constructs conditional FP-trees to decompose the problem into smaller sub-problems without candidate generation. Examples are provided to illustrate the FP-tree construction and pattern mining.
Dwh lecture slides-week 13
Dwh lecture slides-week 13Shani729 The document discusses the process of dimensional modeling from ER diagrams to dimensional models. It outlines a 4 step method: 1) Choose the business process, 2) Choose the grain, 3) Choose the facts, and 4) Choose the dimensions. It describes each step in detail, including choosing an appropriate grain, identifying additive vs. non-additive facts, handling slowly changing dimensions, and the tradeoffs of different approaches to modeling dimensions.
Dwh lecture slides-week10
Dwh lecture slides-week10Shani729 The document describes a 4-step process for dimensional modeling: 1) choose a business process, 2) choose the grain, 3) choose facts, and 4) choose dimensions. It discusses important dimensional modeling concepts like grain, facts, dimensions, and hierarchies. It also covers considerations for choosing an appropriate grain like granularity, expressiveness, and hardware trade-offs. Aggregation can hide crucial facts but works for repetitive queries if the grain is justified. Dimensions should be single-valued attributes during transactions but can sometimes be multi-valued, requiring handling of problems. Dimensions must be applicable to the chosen grain.
Aforismos. parte séptima.
Aforismos. parte séptima.José María Este documento contiene 200 aforismos sobre diversidad funcional escritos por José María Olayo Martínez. Cada aforismo presenta una reflexión breve sobre temas como cometer errores, crear espacios de resistencia o compartir, el victimismo, la empatía, la igualdad de oportunidades, la constitución española, y más.
Indices 02 apr2013055607
Indices 02 apr2013055607Investors Empowered The document provides a snapshot of various Indian stock market indices as of April 2, 2013. It lists the current value, day's high and low, previous close, change from previous close in absolute and percentage terms, and other statistical data for over 30 indices tracking different sectors of the Indian economy. The indices showed mixed performance on the day with some gaining and others declining marginally.
лекц. №13-14 екстер'єр сільськогосподарських тварин
лекц. №13-14 екстер'єр сільськогосподарських тваринЕвгений Баркарь лекц. №13-14 екстер'єр сільськогосподарських тварин
Historia Escolar de mis antepasados
Historia Escolar de mis antepasadosmartamoyagz Este documento presenta las entrevistas realizadas a 5 miembros de la familia de diferentes generaciones sobre sus experiencias educativas. Se comparan aspectos como las asignaturas, el horario, la disciplina, los castigos y las diferencias entre escuelas públicas y privadas a lo largo del tiempo, desde la década de 1930 hasta la actualidad.
Park project
Park projectShyreene Legisma The document describes the amenities and features of H2O Splash-Tacular water park located in Cabuyao, Laguna, Philippines. The water park includes a wave pool, lazy river, water slides, cabanas, picnic areas, and more. It is situated in the heart of Cabuyao and provides a fun escape for families, friends, and others.
Halaman pengesahan
Halaman pengesahanAdul Imau Dokumen tersebut merupakan halaman pengesahan kegiatan KKN-PPM mahasiswa Unlam di desa Ambungan, Tanah Laut. Terdapat 10 mahasiswa yang menyelesaikan kegiatannya selama satu bulan di bawah bimbingan dosen pembimbing dan kerjasama dengan aparat desa.
Dwh lecture slides-week5&6
Dwh lecture slides-week5&6Shani729 This document discusses five principal techniques for de-normalizing data in a data warehouse: collapsing tables, handling many-to-many relationships, splitting tables horizontally and vertically, pre-joining tables, and adding redundant columns. It provides examples and discusses trade-offs for each technique in terms of storage, performance, ease of use, and maintenance. De-normalization can improve query performance but also increases data storage requirements and maintenance effort. Careful consideration of each case is needed to determine if de-normalization provides overall benefits.
Dwh lecture slides-week2
Dwh lecture slides-week2Shani729 This document outlines the approach and summary of a course on data warehousing and mining. The course aims to develop an understanding of relational database concepts and how they apply and break down in very large databases and data warehousing. It will cover topics like online analytical processing, dimensional modeling, extract-transform-load, data quality management, and data mining concepts. The course also provides an overview of important reference books on data warehousing.
Dwh lecture slides-week 12&13
Dwh lecture slides-week 12&13Shani729 This document discusses data warehousing and online analytical processing (OLAP). It begins by explaining the relationship between data warehouses and OLAP, noting that OLAP supports analysis using data stored in a data warehouse. It then discusses different implementations of OLAP, including MOLAP (multidimensional OLAP using pre-aggregated data cubes), ROLAP (relational OLAP using relational databases), and HOLAP (hybrid OLAP combining aspects of MOLAP and ROLAP). It also addresses challenges in implementing OLAP and balancing performance and storage needs.
Online fundraising, 12 nástrojov pre rýchly štart
Online fundraising, 12 nástrojov pre rýchly štartZuzana Suchová 12 nástrojov pre rýchle naštartovanie online fundraisingu.
Informe cimentacion-carpa
Informe cimentacion-carparutenko El documento solicita un informe sobre la cimentación de hormigón armado para una carpa destinada a cubrir una pista de juegos infantiles. La cimentación consiste en 10 zapatas de hormigón armado de 1x1x1m excavadas en un terreno arcilloso y gravoso con alta cohesión. Dado que el terreno tiene una tensión admisible de 2kg/cm2 y soportará cargas ligeras, la cimentación se considera adecuada para su propósito.
More from Shani729 (20)
Python tutorialfeb152012
Python tutorialfeb152012Shani729 This document provides an overview of the Python programming language. It begins with an introduction to running Python code and output. It then covers Python's basic data types like integers, floats, strings, lists, tuples and dictionaries. The document explains input and file I/O in Python as well as common control structures like if/else statements, while loops and for loops. It also discusses functions as first-class objects in Python that can be defined and passed as parameters. The document provides examples of higher-order functions like map, filter and reduce. Finally, it notes that functions can be defined inside other functions in Python.
Python tutorial
Python tutorialShani729 This document provides an introduction to the Python programming language. It discusses Python versions and distributions, development environments, the Python interactive shell, basic Python data types like lists and strings, and gives examples of working with these data types through indexing, slicing and built-in methods. It also briefly introduces dictionaries and tuples. The document aims to provide newcomers to Python with essential information on the language and getting started.
Interaction design _beyond_human_computer_interaction
Interaction design _beyond_human_computer_interactionShani729 This document provides an overview of interaction design beyond human-computer interaction. It discusses novel forms of interactive products that are embedded with computational power, such as refrigerators that provide recipes based on stored food. It also discusses augmented reality technologies that combine virtual and physical worlds. Examples of direct manipulation virtual environments and interactive virtual worlds are provided. The document discusses how representations can be dynalinked so that changes in one are reflected in another. It provides examples of aesthetically pleasing interactive products and virtual characters. Overall, the document gives a broad introduction to emerging areas of interaction design beyond traditional human-computer interaction, using examples of novel interactive products and technologies.
Fm lecturer 13(final)
Fm lecturer 13(final)Shani729 The document discusses an introduction to formal methods course. It provides biographical information about the instructor, Dr. Naveed Riaz, and outlines some of the key topics to be covered in the course, including formal languages, modeling systems using logic and set theory, and solving logic puzzles using propositional calculus and truth tables. It also gives an example of solving a logic problem about a person on an island of knights and knaves who says "If I am a knight then I will eat my hat".
Lecture slides week14-15
Lecture slides week14-15Shani729 This document discusses distance measures and scales of measurement that are important for k-nearest neighbor classification. It covers two major classes of distance measures - Euclidean and non-Euclidean. It also describes three major scales of measurement for data - nominal, ordinal, and interval scales. It provides examples of different distance functions like Euclidean, Manhattan, cosine, and edit distances. It discusses how the choice of distance measure depends on the type of data and its scale of measurement.
Data warehousing and mining furc
Data warehousing and mining furcShani729 This document discusses data quality issues related to missing and noisy data. It introduces the concept of data imputation, which is a technique used to replace missing values in a dataset. Common imputation methods discussed include replacing missing numeric values with the mean, median, or mode of existing values for that attribute. The document also discusses different types of missing data (MCAR, MAR, NMAR) and techniques for handling missing data such as discarding records or attributes with many missing values.
Lecture 40
Lecture 40Shani729 The document discusses the need to create a centralized data warehouse (DWH) to store student and course registration data from multiple campuses of a university. It describes issues with the current ad hoc data storage approaches. Sample data is presented from Lahore, Karachi, and Islamabad campuses stored in different formats like text files, Excel, and Access. The data shows inconsistencies in attributes and structures across campuses. It also presents data from Peshawar campus stored in text files with some missing attributes. The problem is to normalize and integrate this heterogeneous multi-source data into a single DWH for analysis.
Lecture 39
Lecture 39Shani729 This document provides an introduction to Data Transformation Services (DTS) in Microsoft SQL Server. It discusses key DTS concepts like packages, tasks, transformations, and connections. DTS allows extracting, transforming, and consolidating data from disparate sources into a centralized location. The document demonstrates how to create, edit, and execute DTS packages using the Import/Export wizard, DTS Designer tool, and programming interfaces. It also covers tasks, transformations, connections, workflows, scheduling, versioning and other features of DTS packages.
Lecture 38
Lecture 38Shani729 This document describes a case study of building an agricultural data warehouse. It discusses the steps taken which include data acquisition, cleansing issues, transforming the data, deploying the data warehouse and using it for various purposes like data validation, generating reports, analyzing spray dates and sowing dates. It finds that ETL is a major challenge due to issues with data collection from farmers. The data warehouse helps enable decision making down to the extension worker level.
Lecture 37
Lecture 37Shani729 This document discusses the development of an agricultural data warehouse (Agri-DW) to store and analyze agricultural data from the Multan region of Pakistan. It describes the key players and pests/predators in the agricultural sector. It also discusses the need for using information technology and data warehousing in agriculture to help monitor factors like pest populations and economic threshold levels. Finally, it outlines a 12-step approach for developing the Agri-DW, including determining user needs, data modeling, and constructing a metadata repository.
Lecture 35
Lecture 35Shani729 The document discusses potential pitfalls and mistakes to avoid when implementing a data warehouse. It identifies searching for a "silver bullet" solution and going to extremes with technical architecture design as two common pitfalls. Ten common mistakes are also listed such as having an unrealistic budget or timeline. Finally, the document outlines seven key steps for a smooth implementation, such as gaining executive support, establishing requirements, and testing the data warehouse.
Lecture 36
Lecture 36Shani729 Part I of the project involves identifying a typical early adopter organization for a data warehouse (DWH) project. Part II consists of (a) identifying a large, early adopter organization and (b) conducting a life-cycle study of the organization's DWH to learn about challenges, lessons, and how the DWH aligned with the organization's adoption of innovations over time. The document also discusses contents and formatting of the project reports, the DWH adoption innovation curve, and how a DWH may develop at different stages of this curve.
Lecture 34
Lecture 34Shani729 The document discusses Kimball's data warehouse lifecycle approach which includes 5 steps: 1) project planning, 2) requirement definition, 3) dimensional modeling, data staging and technical architecture design, 4) deployment, and 5) maintenance and growth. It focuses on steps 3 and 4, describing the technical architecture design process and its components, as well as the deployment step which implements the dimensional model and analytic applications.
Lecture 33
Lecture 33Shani729 The document discusses the key steps in the data warehouse (DWH) lifecycle using Kimball's approach. The lifecycle includes project planning, requirements definition, dimensional modeling, data staging, technical architecture design, and product selection and installation. It focuses on the first two steps of project planning and requirements definition. Project planning establishes the core team, creates a project plan, and develops an initial project scope. Requirements definition involves collecting business requirements through interviews and workshops, prioritizing requirements, and reviewing findings to identify high priority projects.
Lecture 32
Lecture 32Shani729 The document discusses methodologies for the data warehouse lifecycle. It covers common development methodologies like the waterfall model and spiral model. It also covers rapid application development (RAD) and keys to its successful use. The document emphasizes starting a data warehouse project by defining the specific problems it will solve, how success will be measured, managing time and money, and skills required. It presents a common data warehouse lifecycle model of design, prototype, operate, enhance, and deploy phases.
Lecture 31
Lecture 31Shani729 The document discusses supervised and unsupervised learning in data mining. It describes the main types of data mining as supervised, which includes techniques like Bayesian modeling and decision trees when the type and number of classes are known in advance, and unsupervised, which includes clustering techniques like one-way and two-way clustering when the types and number of classes are not known in advance. It provides examples of clustering, including min-max distance clustering to maximize inter-cluster distances and minimize intra-cluster distances, and k-means clustering to group similar data points into k number of clusters.
Lecture 30
Lecture 30Shani729 This document discusses various techniques of data mining including classification, estimation, prediction, market basket analysis, association rule mining, clustering, and comparison of data mining methods. It explains that data mining fits as one step in the overall process of knowledge discovery in databases (KDD) which involves data preprocessing, data mining to identify patterns and generate models, and interpretation/evaluation of results.
Lecture 29
Lecture 29Shani729 Data mining involves extracting valuable non-trivial information from large datasets. It differs from traditional data analysis by taking a knowledge-driven rather than data-driven approach. Data mining uses techniques like decision trees, neural networks, rule induction, clustering and genetic algorithms to extract patterns and relationships within data. The goal is to uncover knowledge that can be used for business purposes like increasing profits through lowering costs or raising revenues.
Lecture 28
Lecture 28Shani729 This document discusses different techniques for performing joins in data warehousing, including nested loop joins, sort-merge joins, and hash joins. It provides code examples and diagrams to illustrate how each type of join works. Specifically, it explains that nested loop joins examine each row in one table to find matching rows in the other table, while sort-merge joins first sort both tables on the join key before merging to find matches. Hash joins hash one table and probe it with the other to identify matches. The document also discusses factors that affect the performance of each join technique, such as table order and skew.
Lecture 27
Lecture 27Shani729 The document discusses different special indexing techniques used in data warehousing to improve query performance, including inverted indexes, bitmap indexes, cluster indexes, and join indexes. Inverted indexes map terms to documents, bitmap indexes represent data values as bit vectors, cluster indexes group similar values together, and join indexes pre-compute joins between tables. Each index structure has advantages and disadvantages depending on the types of queries being optimized.
Recently uploaded (20)
lecture5.pptxJHKGJFHDGTFGYIUOIUIPIOIPUOHIYGUYFGIH
lecture5.pptxJHKGJFHDGTFGYIUOIUIPIOIPUOHIYGUYFGIHAbodahab VBVUFGVHJHVGVHHJJJLHBJGVH HGHUOIPP9UOHIGYUVUII09UOHIYUGHGUI
IntroSlides-April-BuildWithAI-VertexAI.pdf
IntroSlides-April-BuildWithAI-VertexAI.pdfLuiz Carneiro ☁️ GDG Cloud Munich: Build With AI Workshop - Introduction to Vertex AI! ☁️
Join us for an exciting #BuildWithAi workshop on the 28th of April, 2025 at the Google Office in Munich!
Dive into the world of AI with our "Introduction to Vertex AI" session, presented by Google Cloud expert Randy Gupta.
Compiler Design_Lexical Analysis phase.pptx
Compiler Design_Lexical Analysis phase.pptxRushaliDeshmukh2 The role of the lexical analyzer
Specification of tokens
Finite state machines
From a regular expressions to an NFA
Convert NFA to DFA
Transforming grammars and regular expressions
Transforming automata to grammars
Language for specifying lexical analyzers
RICS Membership-(The Royal Institution of Chartered Surveyors).pdf
RICS Membership-(The Royal Institution of Chartered Surveyors).pdfMohamedAbdelkader115 Glad to be one of only 14 members inside Kuwait to hold this credential.
Please check the members inside kuwait from this link:
https://www.rics.org/networking/find-a-member.html?firstname=&lastname=&town=&country=Kuwait&member_grade=(AssocRICS)&expert_witness=&accrediation=&page=1
Structural Response of Reinforced Self-Compacting Concrete Deep Beam Using Fi...
Structural Response of Reinforced Self-Compacting Concrete Deep Beam Using Fi...Journal of Soft Computing in Civil Engineering Analysis of reinforced concrete deep beam is based on simplified approximate method due to the complexity of the exact analysis. The complexity is due to a number of parameters affecting its response. To evaluate some of this parameters, finite element study of the structural behavior of the reinforced self-compacting concrete deep beam was carried out using Abaqus finite element modeling tool. The model was validated against experimental data from the literature. The parametric effects of varied concrete compressive strength, vertical web reinforcement ratio and horizontal web reinforcement ratio on the beam were tested on eight (8) different specimens under four points loads. The results of the validation work showed good agreement with the experimental studies. The parametric study revealed that the concrete compressive strength most significantly influenced the specimens’ response with the average of 41.1% and 49 % increment in the diagonal cracking and ultimate load respectively due to doubling of concrete compressive strength. Although the increase in horizontal web reinforcement ratio from 0.31 % to 0.63 % lead to average of 6.24 % increment on the diagonal cracking load, it does not influence the ultimate strength and the load-deflection response of the beams. Similar variation in vertical web reinforcement ratio leads to an average of 2.4 % and 15 % increment in cracking and ultimate load respectively with no appreciable effect on the load-deflection response.
Raish Khanji GTU 8th sem Internship Report.pdf
Raish Khanji GTU 8th sem Internship Report.pdfRaishKhanji This report details the practical experiences gained during an internship at Indo German Tool
Room, Ahmedabad. The internship provided hands-on training in various manufacturing technologies, encompassing both conventional and advanced techniques. Significant emphasis was placed on machining processes, including operation and fundamental
understanding of lathe and milling machines. Furthermore, the internship incorporated
modern welding technology, notably through the application of an Augmented Reality (AR)
simulator, offering a safe and effective environment for skill development. Exposure to
industrial automation was achieved through practical exercises in Programmable Logic Controllers (PLCs) using Siemens TIA software and direct operation of industrial robots
utilizing teach pendants. The principles and practical aspects of Computer Numerical Control
(CNC) technology were also explored. Complementing these manufacturing processes, the
internship included extensive application of SolidWorks software for design and modeling tasks. This comprehensive practical training has provided a foundational understanding of
key aspects of modern manufacturing and design, enhancing the technical proficiency and readiness for future engineering endeavors.
"Feed Water Heaters in Thermal Power Plants: Types, Working, and Efficiency G...
"Feed Water Heaters in Thermal Power Plants: Types, Working, and Efficiency G...Infopitaara A feed water heater is a device used in power plants to preheat water before it enters the boiler. It plays a critical role in improving the overall efficiency of the power generation process, especially in thermal power plants.
🔧 Function of a Feed Water Heater:
It uses steam extracted from the turbine to preheat the feed water.
This reduces the fuel required to convert water into steam in the boiler.
It supports Regenerative Rankine Cycle, increasing plant efficiency.
🔍 Types of Feed Water Heaters:
Open Feed Water Heater (Direct Contact)
Steam and water come into direct contact.
Mixing occurs, and heat is transferred directly.
Common in low-pressure stages.
Closed Feed Water Heater (Surface Type)
Steam and water are separated by tubes.
Heat is transferred through tube walls.
Common in high-pressure systems.
⚙️ Advantages:
Improves thermal efficiency.
Reduces fuel consumption.
Lowers thermal stress on boiler components.
Minimizes corrosion by removing dissolved gases.
15th International Conference on Computer Science, Engineering and Applicatio...
15th International Conference on Computer Science, Engineering and Applicatio...IJCSES Journal #computerscience #programming #coding #technology #programmer #python #computer #developer #tech #coder #javascript #java #codinglife #html #code #softwaredeveloper #webdeveloper #software #cybersecurity #linux #computerengineering #webdevelopment #softwareengineer #machinelearning #hacking #engineering #datascience #css #programmers #pythonprogramming
Data Structures_Searching and Sorting.pptx
Data Structures_Searching and Sorting.pptxRushaliDeshmukh2 Sorting Order and Stability in Sorting.
Concept of Internal and External Sorting.
Bubble Sort,
Insertion Sort,
Selection Sort,
Quick Sort and
Merge Sort,
Radix Sort, and
Shell Sort,
External Sorting, Time complexity analysis of Sorting Algorithms.
The Gaussian Process Modeling Module in UQLab
The Gaussian Process Modeling Module in UQLabJournal of Soft Computing in Civil Engineering We introduce the Gaussian process (GP) modeling module developed within the UQLab software framework. The novel design of the GP-module aims at providing seamless integration of GP modeling into any uncertainty quantification workflow, as well as a standalone surrogate modeling tool. We first briefly present the key mathematical tools on the basis of GP modeling (a.k.a. Kriging), as well as the associated theoretical and computational framework. We then provide an extensive overview of the available features of the software and demonstrate its flexibility and user-friendliness. Finally, we showcase the usage and the performance of the software on several applications borrowed from different fields of engineering. These include a basic surrogate of a well-known analytical benchmark function; a hierarchical Kriging example applied to wind turbine aero-servo-elastic simulations and a more complex geotechnical example that requires a non-stationary, user-defined correlation function. The GP-module, like the rest of the scientific code that is shipped with UQLab, is open source (BSD license).
ELectronics Boards & Product Testing_Shiju.pdf
ELectronics Boards & Product Testing_Shiju.pdfShiju Jacob This presentation provides a high level insight about DFT analysis and test coverage calculation, finalizing test strategy, and types of tests at different levels of the product.
Level 1-Safety.pptx Presentation of Electrical Safety
Level 1-Safety.pptx Presentation of Electrical SafetyJoseAlbertoCariasDel Level 1-Safety.pptx Presentation of Electrical Safety
Artificial Intelligence (AI) basics.pptx
Artificial Intelligence (AI) basics.pptxaditichinar its all about Artificial Intelligence(Ai) and Machine Learning and not on advanced level you can study before the exam or can check for some information on Ai for project
Structural Response of Reinforced Self-Compacting Concrete Deep Beam Using Fi...
Structural Response of Reinforced Self-Compacting Concrete Deep Beam Using Fi...Journal of Soft Computing in Civil Engineering
Dwh lecture slides-week1
- 1. Dr. Abdul Basit Siddiqui Assistant Professor FURC (Lecture Slides Week # 1)
- 2. Introduction to Databases What is a Database? What are OLTP Systems? OLTP System Strengths and Weaknesses Introduction to different keys ER Model Normalization