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SQL (Structured Query Language) is a language for managing and manipulating relational databases. It enables the creation, querying, and modification of data, making it an essential part of database administration.
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SQL is a declarative language for querying, changing and structuring data in relational databases.
SQL evolved from SEQUEL, which IBM developed in the 1970s for Edgar F. Codd’s relational data model. ANSI and ISO standardized the language while database systems added their own dialects.
A SQL statement describes the desired result, such as a filtered, joined or grouped result set. The database system decides how to execute that request efficiently.
Data is handled through declarative queries.
The system translates queries into an execution plan.
SQL queries, changes and structures relational data.
SQL is a shared foundation for applications, analytics and databases using a relational model.
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