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Query languages are computer languages used to make queries into databases and information systems.
Broadly, query languages can be classified according to whether they are database query languages or information retrieval query languages. The difference is that a database query language attempts to give factual answers to factual questions, while an information retrieval query language attempts to find documents containing information that is relevant to an area of inquiry.
Examples include:
Relational model, PostgreSQL, International Electrotechnical Commission, Prolog, Ibm
Relational model, Acid, Database normalization, Sql, Parallel computing
Sql, First normal form, Relational model, Second normal form, Third normal form
Sql, Relation (database), Column (database), Relational algebra, Set theory
Information retrieval, Chemistry, Computer science, Information science, Statistics
Database, Data, Database management system, Heterogeneous Database System, Query language
Sql, Relational model, Database, Computer science, Entity–relationship model
Database, Database normalization, Select (SQL), Data, Data definition language
Sql, Database, Information retrieval, Database normalization, Query language