Transcription of INTRODUCTION TO RDBMS
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INTRODUCTION TO RDBMS
INTRODUCTION to RDBMS / 1 CHAPTER 1 INTRODUCTION TO RDBMS Objectives INTRODUCTION What is RDBMS ? Difference between DBMS & RDBMS Summary Check your Progress Answers Questions for Self Study Suggested Readings OBJECTIVES After reading this chapter you will be able to, Describe what RDBMS is State the difference between DBMS & RDBMS INTRODUCTION Most of the problems faced at the time of implementation of any system are outcome of a poor database design. In many cases it happens that system has to be continuously modified in multiple respects due to changing requirements of users. It is very important that a proper planning has to be done. A relation in a relational database is based on a relational schema, which consists of number of attributes.
In this chapter we study the query language : Structured Query Language (SQL) which uses a combination of Relational algebra and Relational calculus. It is a data sub language used to organize, manage and retrieve data from relational database, which is managed by Relational Database Management System (RDBMS).
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