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CSC208 Management Infromation Systems

CSC208 Management Infromation Systems . Siti Nurbaya Ismail Faculty of Computer Science & Mathematics, Universiti Teknologi MARA (UiTM), Kedah | sitinurbaya@kedah.uitm.edu.my | http://www.sitinur151.wordpress.com | | A2-3039 | ext:2561 | 012-7760562 |. Introduction to Database.

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CSC208 Management Infromation Systems

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  1. CSC208Management Infromation Systems Siti Nurbaya Ismail Faculty of Computer Science & Mathematics, Universiti Teknologi MARA (UiTM), Kedah | sitinurbaya@kedah.uitm.edu.my | http://www.sitinur151.wordpress.com | | A2-3039 | ext:2561 | 012-7760562 | Introduction to Database

  2. Introduction to Database 1.1 Introducing Database 1.2 A Logical View Of Data 1.3 Primary & Foreign Keys 1.4 Relationship

  3. 1.1 Introducing The Database Data and information • Data? • Raw facts • Building blocks of information • Examples: • AHMAD • 20011545789 • AM228 • CSC208

  4. 1.1 Introducing The Database Data and information • Information? • Produce by processing data • Reveal meaning of data • Examples: • 20011545789 is UiTM Student Number for Ahmad who is currently studying in Faculty of Administrative Science & policy StudiesUiTM Kedah and is register for CSC208 (Management Information Systems) subject for semester September 2012 – January 2013

  5. 1.1 Introducing The Database Data and information How do data and information relate?

  6. 1.1 Introducing The Database A Glance of Database Concept subject student register

  7. 1.1 Introducing The Database What is database? Database • A shared collection of integrated computer structure designed to meet various needs of an organization. • It houses: • End-user-data : raw facts • Metadata : data about data DBMS • DataBaseManagement System • A software that enable user to define, create, maintain and control access to database • Possible to share data among multiple applications or users • Makes data management more efficient and effective • Examples: • IBM DB2, MS Access, MySQL, ORACLE

  8. 1.1 Introducing The Database What is database?

  9. 1.1 Introducing The Database What is database? The importance of database: Manage interactions between end users and database Helps make data management more efficient and effective Its query languages allows make quick answers to add-hoc queries Provide end users better access to more and better managed data Promote and integrated view of org’ operations big picture

  10. 1.1 Introducing The Database What is database? Advantages of database: control of data redundancy data consistency more information from the same amount of data sharing of data improved data integrity improved security enforcement of standards economy of scale improved data accessibility and responsiveness increased productivity improved maintenance through data independence improved backup and recovery services

  11. 1.1 Introducing The Database What is database? Disadvantages of database: complexity size (space) cost of DBMS additional hardware cost cost of conversion performance higher impact of failure

  12. 1.2 A Logical View of DataTable and Their Characteristics • Table: • two-dimensional structure composed of rows and columns • Contains group of related entities = an entity set

  13. 1.2 A Logical View of DataTable and Their Characteristics Attribuite / Fields Table

  14. 1.3 Primary and Foreign Keys3.2 Keys: Types

  15. 1.3 Primary and Foreign Keys3.2 Keys: Types Foreign Key Primary Key

  16. 1.3 Primary and Foreign Keys3.2 Keys: Types Primary Key Foreign Key

  17. 1.4 Relationship(1:1) (1:m) (m:n) Relationship is a logical interaction among the entities in a relational database. Operate in both directions There are 3 basic relationship in a database;

  18. 1.4 Relationship(1:1) (1:m) (m:n) 1 m

  19. 1.4 Relationship(1:1) (1:m) (m:n)

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