A field contained in two or more database tables that forms a connection between the tables.

Allows a Web server to pass control to a software application, based on user request. The application receives and organizes data, then returns it in a consistent format.

A collection of data that can be sorted and searched using search algorithms.

A program used to store, access, and manipulate database information.

A category of information in a database table.

A field in a related database table that refers to the primary key in the primary table.

A catalog of the contents of a database. Each entry identifies a unique database record.

A word that appears on a Webpage and is used by search engines to identify relevant URLs. Some words, such as "the" or "and," are too common to be used.

A relationship in which one record in Table A can relate to many matching records in Table B, and vice versa.

A search engine that scans Webpages for <meta> tag information.

A relationship in which a record in Table A can have multiple matching records in Table B, but a record in Table B has only one matching record in Table A.

A relationship in which each record in Table A can have only one matching record in Table B, and vice versa.

A language used to create and maintain professional, high-performance corporate databases.

A collection of data about a limited topic, organized into rows and columns in a database.

A question posed by a user to a database to request database information.