The document provides information about database management systems. It defines a database as a collection of data that can be used alone or combined to answer users' questions. It defines a database management system (DBMS) as a collection of programs that provide database management, control access to data, and contain a query language to retrieve information easily. It notes that an important part of database design is structuring the database so that specific items can be reached easily, the database can respond to different user questions easily, and the database occupies minimum storage space while only containing necessary data that can be easily added or updated.

1. DATABASE MANAGEMENT
SYSTEM
Lecture #4
Mrs.Vasanthi Muniasamy M.Sc., M.Phil
Department Of Information Systems
King Khalid University

2. BASIC CONCEPTS
1. What is a database?
A database is a collection of data which can be used:
• alone, or
• combined to other data
to provide answers to the user’s question.

3. 2. What is a Database Management System?
A DBMS is a collection of programs which
• provide management of databases
• control access to data
• contain a query language to retrieve information easily

4. 3. Database Design
It is important to design the database in such a way that:
• A specific item can be reached easily
•The database can respond to the user’s different questions
easily
•The database occupies minimum storage space
•The database contains no unnecessary data
•Data can be added and updated easily without causing
mistakes

5. GLOSSARY OF TERMS
Database : Collection of Tables
Table : Collection of Records
Record : Collection of Fields
Fields : Collection of Data
Data : Piece of Information

6. PARTS OF A TABLE
Fields
Data
Reg. No Name Address
111 Tony Abha
Records 222 Rosy Khamis
Reg. No Sex Course
111 Male IIT
Records 222 Female MBA

7. THANK YOU