Relational Database Management Systems

A relational database management system (RDBMS) is a software program you use to create, maintain, modify, and manipulate a relational database. Many RDBMS programs also provide the tools you need to create end-user applications that interact with the data stored in the database. Of course, the quality of an RDBMS is a direct function of the extent to which it supports the relational database model. Even among “true” RDBMSs, support for the relational database varies among vendors, and there is yet to be a full implementation of the relational model's potential. Despite this, all RDBMS programs continue to evolve and become more full-featured and powerful than ever before.

Since the early 1970s, a number ...

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