Database Management Software - Research Article from Macmillan Science Library: Computer Sciences

This encyclopedia article consists of approximately 5 pages of information about Database Management Software.
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Database Structure

Databases are computer files that store information. These data can be of many different types and formats, depending on the mission. All databases store data in tables or groups of tables. Each table consists of rows and columns, not unlike a grid or graph. Vertical columns of a table are called fields, and the horizontal rows are called records. Each field has a label at the top, and each record has a number at the left margin. An example of a table with two fields and three records follows. The fields are "name," and "phone number."

Name Phone Number
1 John Smith 617–555–1212
2 Jane Doe 413–555–1212
3 Cindy Smith 508–555–1212

Relational Databases

When two or more tables are related in a database, it is known as a " relational database. " Relational databases allow records from more than one table to be searched and displayed. The...

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This section contains 1,260 words
(approx. 5 pages at 300 words per page)
Buy the Database Management Software Encyclopedia Article
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Macmillan Science Library: Computer Sciences
Database Management Software from Macmillan Science Library: Computer Sciences. Copyright © 2001-2006 by Macmillan Reference USA, an imprint of the Gale Group. All rights reserved.
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