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Relational algebra
[az] Əlaqələr cəbri
[cs] Relační algebra
[de] Relationale Algebra
[es] Álgebra relacional
[fa] جبر رابطهای
[fi] Relaatioalgebra
[fr] Algèbre relationnelle
[he] אלגברה רלציונית
[id] Aljabar relasional
[is] Töflualgebra