..Gevita Chap 10 Database Management

Gevita Chap 10 Database Management

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Gevita Chap 10 Database Management - Presentation Transcript

CHAPTER 10 DATABASE MANAGEMENT PRESENTED BY GEVITA
DATABASE,DATA& INFORMATION
7 type data
- Data integrity
- Quality Of valuable information
- Hierarchy of data
- Characters
- Fields
- Records
- Files
MAINTAINING DATA
Adding Records
Modifying Records
Deleting Records
Validating Data
FILE PROCESSING VERSUS DATABASES File processing system Data Redundancy Isolated data The database Approach Disadvantages of database Many programs and users share the data in the database.
Can be more complex than a file processing system.
Store a lot in single file.
DATABASE MANAGEMENT SYSTEM
4 TYPE OF DATABASE
1. File Retrieval & Maintenance
2. Query Language
3. Data Security
4. Backup & Recovery
Relational, Object Oriented & Multidimensional databases
1. Relational
- Stores data in tables
2. Object- Oriented Database
- store data in object
3. Multidimensional
- store data dimensions
Web Database & Types
CHAPTER REVIEW -Database, Data and information -Maintaining Data -File Processing versus Databases -Database Management System -Relational, Object Oriented & Multidimensional - Web Database
What is the examples of application for an object-oriented database?
2. What is the 2 major weaknesses of file processing system?
1. A multimedia database, a groupware database, a computer –aided design, a hypertext database. 2. Data redundancy and isolated data THANK YOU!