Database Reference
In-Depth Information
Introduction to Database
Systems
Welcome and congratulations on your entry to this course in database systems. The fact
that you are in this course means that you have covered several fundamental topics in
programming, data structures, user interface, and software engineering. Now you want
to learn about databases — their significance, the underlying theoretical principles that
govern them, how they are constructed, and their management. You are at the right place.
This chapter addresses the first issue: the significance of database systems.
Topics covered include the following:
•
Definition and Rationale
•
Objectives of a Database System
•
Advantages of a Database System
•
Approaches to Database Design
•
Desirable Features of a Database System
•
Database Development Life Cycle
•
Summary and Concluding Remarks
1.1 Definitions and Rationale
A
database system
(DBS) is a computerized record keeping system with the overall
purpose of maintaining information and making it available whenever required. The
database typically stores related data in a computer system.
