Join (relational algebra)

In relational algebra, a join is a binary operation, written as R ⋈ S {\displaystyle R\bowtie S} where R {\displaystyle R} and S {\displaystyle S} represent relations, that combines their data where they have a common attribute. == Natural join == Natural join (⨝) is a binary operator that is written as (R ⨝ S) where R and S are relations.

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