This document provides an overview of database management concepts. It discusses data security, recovery utilities, popular data models including relational, object-oriented, and multi-dimensional databases. It also discusses structured query language, data warehousing, web databases, and the roles of database analysts and administrators.

1. INFORMATION SYSTEMSDATABASE MANAGEMENT (PART 2)Prepared by: Jan Wong

2. The Learning OutcomesIdentify the differences between databasesExplain how you can interactwith web databasesDiscuss the responsibilities of web analysts and administrators

3. The KeywordsData Security

4. Backup and log

5. Recovery utility

6. Data model

7. Relational database

8. Relationship

9. Structured Query Language

10. Object Oriented Database

11. Data Warehouse

12. Web Database

13. Database AdministrationData SecurityDBMS provides means to ensure only authorized users can access dataAccess privileges define activities that specific user or group of users can performRead-only privileges - user can view data, but cannot change itFull-update privileges - user can view and change data

14. Recovery UtilityUses logs and/or backups to restore database when it is damaged or destroyed2 types:Rollforward— DBMS uses log to re-enter changes made to database since last save or backupAlso called forward recoveryRollback — DBMS uses log to undo any changes made to database during a certain period of timeAlso called backward recovery

15. Data ModelRules and standards that define how database organizes dataDefines how users view organization of dataFour popular data modelsRelationalObject-orientedObject-relationalMultidimensional

16. Stores data in tables that consist of rows and columnsEach row has primary keyEach column has unique nameStores data relationships – how data relates to each otherWhat is a relationship?Connection within dataUses Structured Query Language (SQL)Data Models: Relational Database

17. Structured Query Language (SQL)Allows you to manage, update, and retrieve dataHas special keywords and rules included in SQL statementsHow to interact with DatabasesSQL statementSQL statement results