SQL

From Wiki @ Karl Jones dot com
Revision as of 06:28, 21 May 2015 by Karl Jones (Talk | contribs) (First)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

SQL (Structured Query Language) is a special-purpose programming language designed for managing data held in a relational database management system (RDBMS), or for stream processing in a relational data stream management system (RDSMS).

Originally based upon relational algebra and tuple relational calculus, SQL consists of a data definition language and a data manipulation language.

The scope of SQL includes data insert, query, update and delete, schema creation and modification, and data access control.

SQL was one of the first commercial languages for Edgar F. Codd's relational model, as described in his influential 1970 paper, "A Relational Model of Data for Large Shared Data Banks." Despite not entirely adhering to the relational model as described by Codd, it became the most widely used database language.

External links

  • SQL @ Wikipedia
Retrieved from "http://wiki.karljones.com/index.php?title=SQL&oldid=600"