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In the name of Allah
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3. Database Management Systems
Lecture -1
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Course Objectives
Introduction to Very basics
Guides through Different
design stages
Familiarize with a tool
Emphasis on
Design stages of Databases
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Importance of Course
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Lecture Overview
Database Definition
Comparison with the prior Data Processing approach
Pros & Cons of Databases
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What is a Database
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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
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9. Database Def-2
A database is a self-describing collection of integrated records
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Database Def-3
A database models a particular real world system in the computer in the form of data
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11. The concept of a shared organizational database
Management
Control
Planning
Marketing
Product
Development
Sales
Corporate
Database
Accounting
Accounts
Payable
Receivable
Manufacturing
Production
Scheduling
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A bit of History
Computer initially used for computational/ engineering purposes
Commercial applications introduced File Processing System
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13. File Processing System
A collection of programs that perform services for the end-users such as production of reports
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14. File Processing Systems
Library
Applications
Data
Files
Examination
Applications
Data
Files
Registration
Applications
Data
Files
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Program and Data Interdependence

15. 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
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16. 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
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