Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Relational_algebra> ?p ?o }
- Relational_algebra abstract "Relational algebra, first described by E.F. Codd while at IBM, is a family of algebras with a well-founded semantics used for modelling the data stored in relational databases, and defining queries on it.The main application of relational algebra is providing a theoretical foundation for relational databases, particularly query languages for such databases, chief among which is SQL.".
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- Relational_algebra wikiPageWikiLinkText "Equijoin".
- Relational_algebra wikiPageWikiLinkText "Relational algebra".
- Relational_algebra wikiPageWikiLinkText "Relational algebra#Antijoin (▷)".
- Relational_algebra wikiPageWikiLinkText "Relational algebra#Full outer join".
- Relational_algebra wikiPageWikiLinkText "Relational algebra#Joins and join-like operators".
- Relational_algebra wikiPageWikiLinkText "Relational algebra#Left outer join".
- Relational_algebra wikiPageWikiLinkText "Relational algebra#Natural join".
- Relational_algebra wikiPageWikiLinkText "Relational algebra#Right outer join".
- Relational_algebra wikiPageWikiLinkText "Relational algebra#Selection (σ)".
- Relational_algebra wikiPageWikiLinkText "Relational algebra#Semijoin".
- Relational_algebra wikiPageWikiLinkText "Relational algebra#⋈".
- Relational_algebra wikiPageWikiLinkText "Relational_algebra#Antijoin_.28.E2.96.B7.29".
- Relational_algebra wikiPageWikiLinkText "Relational_algebra#Natural join".
- Relational_algebra wikiPageWikiLinkText "Relational_algebra#Semijoin_.28.E2.8B.89.29.28.E2.8B.8A.29".
- Relational_algebra wikiPageWikiLinkText "Relational_algebra#θ-join and equijoin".
- Relational_algebra wikiPageWikiLinkText "join".
- Relational_algebra wikiPageWikiLinkText "joins".
- Relational_algebra wikiPageWikiLinkText "project".
- Relational_algebra wikiPageWikiLinkText "relation''al'' algebra".
- Relational_algebra wikiPageWikiLinkText "relational algebra".
- Relational_algebra wikiPageWikiLinkText "relational division".
- Relational_algebra wikiPageWikiLinkText "relational patterns".