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20 Cards in this Set
- Front
- Back
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Boolean operator
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A symbol or word used in Internet searches to narrow search results by including or excluding certain words or phrases from the search criteria.
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database
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A collection of data that can be sorted and searched using search algorithms.
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database management system (DBMS)
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A program used to store, access and manipulate database information.
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common field
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A field contained in two or more database tables that forms a connection between the tables.
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field
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A category of information in a database table
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foreign key
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A field in a related database table that refers to the primary key in the primary table.
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index
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A catalog of the contents of a database. Each entry identifies a unique database record.
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junction table
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A database table containing foreign-key fields that refer to the primary-key fields from the primary tables in a many-to-many relationship.
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keyword
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A word that appears on a Web page and is used by search engines to identify relevant URLs. Some words, such as "the" or "and," are too common to be used as keywords.
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many-to-many relationship
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In databases, a relationship in which one record in Table A can relate to many matching records in Table B, and vice versa.
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meta search engine
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A search engine that scans Web pages for < meta > tag information.
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one-to-many relationship
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In databases, 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.
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one-to-one relationship
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In databases, a relationship in which each record in Table A can have only one matching record in Table B, and vice versa.
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primary key
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A field containing a value that uniquely identifies each record in a database table.
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query
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A question posed by a user to a database to request database information. The database returns the query results based on the criteria supplied by the user in the query.
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record
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A collection of information in a database table consisting of one or more related fields about a specific entity, such as a person, product or event.
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relationship
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A connection between two or more database tables that is based on a field that the tables have in common.
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search engine
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A powerful software program that searches Internet databases for user-specified information.
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Structured Query Language (SQL)
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A language used to create and maintain professional, high-performance corporate databases.
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table
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A collection of data about a limited topic, organized into rows and columns in a database.
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