Assertion: column's type | /r/HasProperty | classed as sublanguage
Facets:
value: informally
type: MANNER
Source sentences:
text: Originally based upon relational algebra and tuple relational calculus, SQL consists of many types of statements, which may be informally classed as sublanguages, commonly: a data query language (DQL),[a] a data definition language (DDL),[b] a data control language (DCL), and a data manipulation language (DML).[c]