Query

Generally used with database management systems (or database programs), a query is generally a structured statement that the database system uses to extract specific requested data from the database. A query specifies the criteria by which data is extracted from the database. Queries can be as simple as SHOW ALL or very complicated statements that link several database tables together in order to extract very specific information. As an example, for a movie database one might be:

SELECT title FROM movies WHERE CATEGORY = SciFi AND RATING = R OR RATING = PG

While most database systems use queries, SQL is probably the most commonly used query language.

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