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Database Management
System (DBMS)
Intro to DBMS



Data is a vital part of any organization. It needs to be
stored, organized, managed, accessed, protected and
manipulated.
Operational
Use databases to:
 Create a book
 Track book sales
 Set salaries and wages
 Pay employees
 The purpose of a database is to keep
track of things
 Unlike a list or spreadsheet, a database
may store information that is more
complicated than a simple list
Intro to DBMS
Purpose of DBMS
 The Database Approach: Foundational Concepts


 DBMS – Database Management Systems
Use a DBMS software to create, store, organize, and
retrieve data from a single database or several databases
Example: Microsoft Access
Intro to DBMS
Database Management for Strategic Advantage
 Advantages of the Database Approach








 Program-data independence
Minimal data redundancy
Improved data consistency
Improved data sharing
Increased productivity of application development
Enforcement of standards
Improved data quality
Improved data accessibility
Reduced program maintenance
Intro to DBMS
Database Management for Strategic Advantage

DATA BASE MANAGEMENT SYSTEM (DBMS)
Intro to DBMS
Database Systems
 The four components of a database system are:



 Users
Database Application
Database Management System (DBMS)
Database
Intro to DBMS
Database Systems
 A user of a database system will


 Use a database application to track things
Use forms to enter, read, delete and query data
Produce reports
Intro to DBMS
Database Systems - Users
Intro to DBMS
Database Systems – Database Application



A set of one or more computer programs that serves as an
intermediary between the users and the DBMS
Application program that read or modify database data by
sending SQL statements to DBMS.
Application program to present data to users in the format of
forms and reports.
Database Systems – Database Application :
Functions
 Create and process forms
 Process user queries
 Create and process reports
 Execute application logic
 Control database applications
Intro to DBMS
Intro to DBMS
Database Systems – DBMS



A computer program used to create, process and administer
the database
DBMS receives request encoded in SQL and translates these
requests into actions on the database
DBMS is a large, complicated program that is licensed
software. Almost majority of the companies never write their
own DBMS program.
Intro to DBMS
Database Systems – Database


The database is a collection of related tables and other
structures.
A database is a self-describing collection of related records










Create databases
Create tables
Create supporting structures
Read database data
Modify database data (insert, update, delete)
Maintain database structures
Enforce rules
Control concurrency
Provide security
Perform backup and recovery
Intro to DBMS
Functions of DBMS
 Organizational database systems typically:
 Support several users simultaneously
 Include more than one application
 Involve multiple computers
 Are complex in design
 Have many tables
 Have many databases
Intro to DBMS
Organizational DBMS
DATA BASE MANAGEMENT SYSTEM (DBMS)
DATA BASE MANAGEMENT SYSTEM (DBMS)
DATA BASE MANAGEMENT SYSTEM (DBMS)
DATA BASE MANAGEMENT SYSTEM (DBMS)
DATA BASE MANAGEMENT SYSTEM (DBMS)
DATA BASE MANAGEMENT SYSTEM (DBMS)
DATA BASE MANAGEMENT SYSTEM (DBMS)
DATA BASE MANAGEMENT SYSTEM (DBMS)
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Ad

DATA BASE MANAGEMENT SYSTEM (DBMS)

  • 2. Intro to DBMS    Data is a vital part of any organization. It needs to be stored, organized, managed, accessed, protected and manipulated. Operational Use databases to:  Create a book  Track book sales  Set salaries and wages  Pay employees
  • 3.  The purpose of a database is to keep track of things  Unlike a list or spreadsheet, a database may store information that is more complicated than a simple list Intro to DBMS Purpose of DBMS
  • 4.  The Database Approach: Foundational Concepts    DBMS – Database Management Systems Use a DBMS software to create, store, organize, and retrieve data from a single database or several databases Example: Microsoft Access Intro to DBMS Database Management for Strategic Advantage
  • 5.  Advantages of the Database Approach          Program-data independence Minimal data redundancy Improved data consistency Improved data sharing Increased productivity of application development Enforcement of standards Improved data quality Improved data accessibility Reduced program maintenance Intro to DBMS Database Management for Strategic Advantage
  • 6.
  • 8. Intro to DBMS Database Systems  The four components of a database system are:     Users Database Application Database Management System (DBMS) Database
  • 10.  A user of a database system will    Use a database application to track things Use forms to enter, read, delete and query data Produce reports Intro to DBMS Database Systems - Users
  • 11. Intro to DBMS Database Systems – Database Application    A set of one or more computer programs that serves as an intermediary between the users and the DBMS Application program that read or modify database data by sending SQL statements to DBMS. Application program to present data to users in the format of forms and reports.
  • 12. Database Systems – Database Application : Functions  Create and process forms  Process user queries  Create and process reports  Execute application logic  Control database applications Intro to DBMS
  • 13. Intro to DBMS Database Systems – DBMS    A computer program used to create, process and administer the database DBMS receives request encoded in SQL and translates these requests into actions on the database DBMS is a large, complicated program that is licensed software. Almost majority of the companies never write their own DBMS program.
  • 14. Intro to DBMS Database Systems – Database   The database is a collection of related tables and other structures. A database is a self-describing collection of related records
  • 15.           Create databases Create tables Create supporting structures Read database data Modify database data (insert, update, delete) Maintain database structures Enforce rules Control concurrency Provide security Perform backup and recovery Intro to DBMS Functions of DBMS
  • 16.  Organizational database systems typically:  Support several users simultaneously  Include more than one application  Involve multiple computers  Are complex in design  Have many tables  Have many databases Intro to DBMS Organizational DBMS