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ISO
(ISO)
Database languages are specific to a particular data model. Notable examples include:
 
* [[SQL]] combines the roles of data definition, data manipulation, and query in a single language. It was one of the first commercial languages for the relational model, although it departs in some respects from [[Codd's 12 rules|the relational model as described by Codd]] (for example, the rows and columns of a table can be ordered). SQL became a [[Technical standard|standard]] of the [[American National Standards Institute]] (ANSI) in 1986, and of the [[International Organization for StandardsStandardization]] (ISO) in 1987. The standards have been regularly enhanced since and is supported (with varying degrees of conformance) by all mainstream commercial relational DBMSs.<ref name="SQL-Fundamentals">{{cite web
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