1. Database Management Systems
Waqas Arshad Cheema
BS Computer engineering (uet lahore)
MS CS (COMSATS LAHORE)

2. Database Management Systems
Lecture -1

3. Course Objectives Introduction to Very basics
Guides through Different design stages
Familiarize with a tool
Emphasis on Design stages of Databases.

4. Lecture Overview Database Definition
Comparison with the prior Data Processing approach
Pros & Cons of Databases

5. What is a Database

6. Database Def-1
A database is a shared collection of logically related data that is stored to meet the requirements of different users of an organization

7. A database is a self-describing collection of integrated records
Database Def-2
A database is a self-describing collection of integrated records

8. Database Def-3
A database models a particular real world system in the computer in the form of data

9. The concept of a shared organizational database
Management
Control
Planning
Marketing
Product
Development
Sales
Corporate
Database
Accounting
Accounts
Payable
Receivable
Manufacturing
Production
Scheduling

10. A bit of History
Computer initially used for computational/ engineering purposes
Commercial applications introduced File Processing System

11. File Processing System
A collection of programs that perform services for the end-users such as production of reports

12. File Processing Systems
Library
Applications
Data
Files
Examination
Applications
Data
Files
Registration
Applications
Data
Files
Program and Data Interdependence

13. File Processing Systems
Fine
Books Issued
Father Name
Name
Reg_Number
Library
Grade
Semester
Class
Address
Name
Reg_Number
Examination
Class
Address
Phone
Father Name
Name
Reg_Number
Registration
Duplication of Data
Vulnerable to Inconsistency

14. Advantages of Database Approach
Registration
Examination
Library
Applications
Database
Management
System
University
Students
Database
- Data Sharing
- Data Independence
- Controlled Redundancy
- Better Data Integrity
First Lecture Ends