Codd's theorem
id:
codd-s-theorem-198-10683787
title:
Codd's theorem
text:
Codd's theorem states that relational algebra and the domain-independent relational calculus queries, two well-known foundational query languages for the relational model, are precisely equivalent in expressive power. That is, a database query can be formulated in one language if and only if it can be expressed in the other. The theorem is named after Edgar F. Codd, the father of the relational model for database management. The domain independent relational calculus queries are precisely those
brand slug:
wiki
category slug:
encyclopedia
description:
Theorem of expressive equivalence between relational languages
original url:
https://en.wikipedia.org/wiki/Codd%27s_theorem
date created:
date modified:
2024-04-22T11:58:39Z
main entity:
{"identifier":"Q5139948","url":"https://www.wikidata.org/entity/Q5139948"}
image:
fields total:
13
integrity:
14