1. Principles of Information Systems, Sixth Edition Organizing Data and Information Chapter 5

2. Principles of Information Systems, Sixth Edition Principles and Learning Objectives The database approach to data management provides significant advantages over the traditional file-based approach. –Define general data management concepts and terms, highlighting the advantages and disadvantages of the database approach to data management. –Name three database models and outline their basic features, advantages, and disadvantages.

3. Principles of Information Systems, Sixth Edition Principles and Learning Objectives A well-designed and well-managed database is an extremely valuable tool in supporting decision making. –Identify the common functions performed by all database management systems and identify three popular end-user database management systems.

4. Principles of Information Systems, Sixth Edition Principles and Learning Objectives The number and types of database applications will continue to evolve and yield real business benefits –Identify and briefly discuss current database applications.

5. Principles of Information Systems, Sixth Edition The Hierarchy of Data

6. Principles of Information Systems, Sixth Edition Data Entities, Attributes, and Keys

7. Principles of Information Systems, Sixth Edition The Traditional versus the Database Approach to Data Management

8. Principles of Information Systems, Sixth Edition The Traditional Approach

9. Principles of Information Systems, Sixth Edition Traditional Approach Data redundancy Program-data dependence Data integrity

10. Principles of Information Systems, Sixth Edition Database Approach

11. Principles of Information Systems, Sixth Edition Advantages of the Database Approach

12. Principles of Information Systems, Sixth Edition Advantages of the Database Approach

13. Principles of Information Systems, Sixth Edition Disadvantages of the Database Approach

14. Principles of Information Systems, Sixth Edition Data Modeling & Database Models

15. Principles of Information Systems, Sixth Edition Data Modeling and Database Models Content - What data should be collected? Access - What data should be given to what users? Logical structure - How will the data be organized to make sense to a particular user? Physical organization - Where will the data actually be located?

16. Principles of Information Systems, Sixth Edition Data Modeling Enterprise data modeling Planned data redundancy Data model Entity-relationship diagrams

17. Principles of Information Systems, Sixth Edition Entity-Relationship (ER) Diagrams

18. Principles of Information Systems, Sixth Edition Data Models Hierarchical models Network models Relational models

19. Principles of Information Systems, Sixth Edition Hierarchical (Tree) Models

20. Principles of Information Systems, Sixth Edition Network Models

21. Principles of Information Systems, Sixth Edition Relational Models

22. Principles of Information Systems, Sixth Edition Relational Models

23. Principles of Information Systems, Sixth Edition Data Cleanup

24. Principles of Information Systems, Sixth Edition Database Management Systems (DBMSs) Provide a user view Create and modify the database Store and retrieve data Manipulate data Produce reports

25. Principles of Information Systems, Sixth Edition Creating and Modifying the Database

26. Principles of Information Systems, Sixth Edition Data Definition Language

27. Principles of Information Systems, Sixth Edition Creating and Modifying the Database

28. Principles of Information Systems, Sixth Edition Data Dictionary Benefits Reduced data redundancy Faster program development Easier data & information modification Increased data reliability

29. Principles of Information Systems, Sixth Edition Storing and Retrieving Data

30. Principles of Information Systems, Sixth Edition Structured Query Language

31. Principles of Information Systems, Sixth Edition Database Output

32. Principles of Information Systems, Sixth Edition Popular Database Management Systems

33. Principles of Information Systems, Sixth Edition Selecting a DBMS Database size Number of concurrent users Performance Integration Features Vendor Cost

34. Principles of Information Systems, Sixth Edition Database Management Systems

35. Principles of Information Systems, Sixth Edition Data Warehouses

36. Principles of Information Systems, Sixth Edition Comparison of OLTP and Data Warehousing

37. Principles of Information Systems, Sixth Edition Database Developments Data warehouses Data marts Data mining

38. Principles of Information Systems, Sixth Edition Data Mining

39. Principles of Information Systems, Sixth Edition Distributed Databases

40. Principles of Information Systems, Sixth Edition On-Line Analytical Processing

41. Principles of Information Systems, Sixth Edition Open Database Connectivity (ODBC )

42. Principles of Information Systems, Sixth Edition Object-Relational Database Management Systems Stores objects Hypermedia Spatial data technology

43. Principles of Information Systems, Sixth Edition Summary Data - one of the most valuable resources a firm possesses Entity - a generalized class of objects for which data is collected, stored, and maintained DBMS - a group of programs used as an interface between a database and application programs Traditional on-line transaction processing (OLTP) - do not support the types of data analysis needed today