Query language
A query language, also known as data query language or database query language (DQL), is a computer language used to make queries in databases and information systems. In database systems, query languages rely on strict theory to retrieve information.1 A well known example is the Structured Query Language (SQL).
Printed 2026-10-11.
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Footnotes
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Schmitt, Ingo (January 2008). “QQL: A DB&IR Query Language”. The VDLB Journal 17. 17: 39–56. doi:10.1007/s00778-007-0070-1. S2CID 207032530 – via ACM Digital Library. ↩