1. File Processing Versus Databases
1.1. File processing system
1.1.1. Each department has its own set of files
1.1.2. Used for many years
1.1.3. Have data redundancy
1.1.4. Isolate data
1.2. Database approach
1.2.1. Programs and users share data
1.2.2. Reduce data redundancy
1.2.3. Improve data integrity
1.2.4. share data
1.2.5. Allows easier access
1.2.6. Reduces development time
1.2.7. Can be more volnerable
2. Database Management Systems
2.1. Backup
2.2. Log
2.3. Recovery utility
2.4. Continuous backup
3. Relational, Object-Oriented, and Multidimensional Databases
3.1. Multimedia database
3.2. Groupware database
3.3. Computer aided design database
3.4. Hypertext database
4. Databases Data and Information
4.1. Database
4.1.1. collection of data organized in a manner
4.2. Data
4.2.1. collection of unprocessed items Text,Numbers
4.3. Information
4.3.1. Processed data Documents,Audio,Images Video
5. The Hierarchy of Data
5.1. Data is organized in layers
5.2. A character is one byte
5.3. New node
6. Maintaining Data
6.1. Validation
6.1.1. Alphabetic/Numenc check
6.1.2. Range check
6.1.3. Consisteney check
6.1.4. Completeness check
6.1.5. check digit
6.1.6. Cther checks
6.2. File maintenance
6.2.1. Adding records
6.2.2. Modifying records
6.2.3. Dleting records
7. Web Databases
7.1. Databases on the Web allow you to
7.1.1. Shop for products or services
7.1.2. Buy or sell stocks
7.1.3. Search for a job
7.1.4. Make airline reservations
7.1.5. Register for college classes
7.1.6. Check semester grades