Relational Database Management System

(R-D-B-M-S)

A database system composed of tables of information that are connected ("related") by some common information. As an example, a database might have a customer file where each customer is given a unique identification number. Other files might exist that relate a customer's ID to items they have ordered, bills sent out, money paid, and perhaps other data items. A database query could then be performed to obtain various pieces of information about a customer or groups of customers by finding the "related" information in the other files. Complex queries can be performed and extensive manipulation of the resulting data can be performed to mine much information from the data. An RDBMS is quite flexible.

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