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21. Getting Started with Dynamic Web Sit... > 21.4. Databases Explained (in Five M...

Databases Explained (in Five Minutes or Less)

Simply put, databases store information. You encounter them every day in one way or another, whether charging a dinner on a credit card or calling Moviefone to get local movie listings.

A database is like an electronic filing cabinet that stores related information. At home, you might have a filing cabinet to store the bits and pieces of your life. For instance, you might have a filing folder labeled Insurance, in which you keep information about the various insurance policies you carry. Other folders might contain information on phone bills, car service records, and so on.

Tables and Records

Databases have an electronic equivalent to filing folders: tables. A table is a container for information about a set of similar items. For example, in the Exapserater’s online store database, a table stores information on all of the products for sale on the site.


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