The document discusses key concepts related to database management including: 1. It defines databases as collections of organized data that can be accessed, retrieved, and used via database management software. 2. Databases contain fields, records, files, and data types which are the basic units that make up a database. 3. Maintaining accurate and up-to-date data is important, and database management systems help ensure data integrity through validation, adding/editing/deleting records, and reducing redundancy. 4. Database systems improve upon file processing systems by allowing many users and programs to securely share centralized data.

1. INFORMATION SYSTEMSDATABASE MANAGEMENT (PART 1)Prepared by: Jan Wong

2. The Learning OutcomesUnderstand what are DATABASESIdentify the components of a databaseExplain why data is importantto an organizationUnderstand file maintenance techniquesFile processing System VS Database System

3. The KeywordsDatabase

4. Data Integrity

5. GIGO

6. Data Hierarchy

7. Data Types

8. Validation

9. File Processing System

10. Database Processing System

11. Procedure

12. Data Dictionary

13. Report GeneratorData & InformationHow are Data and Information Related?Example:Student ID

14. Data & InformationWhat is Data Integrity?Degree of which data is correctGarbage in, Garbage out (GIGO) - cannot create correct information from incorrect data

15. Data & InformationWhat are the qualities of Valuable Information?6 Qualities:AccurateVerifiableTimelyOrganizedMeaningfulCost Effective+ 1: Accessible

16. Data & InformationWhat is a database?Collection of data, organized so you can access, retrieve and use itDatabase Software (DBMS)Database Management System (e.g. Access, Oracle, MySQL, MS SQL)Create database

17. Add, Change (edit) & Delete Data

18. Sort & Retrieve Data

19. Create Forms & ReportsDATABASE

20. Data HierarchyFIELDSRECORDSUCFILESD1FCHARACTERSDATABASE11

21. In other words…DATABASE

22. Data HierarchyWhat is are fields?Combination of one or more characters

23. Smallest unit of data a user can access to

24. Field Name: Uniquely identifies each field