About: Relational calculus

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Theory of relational databases

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dbo:description	theory of relational databases (en)
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rdfs:label	Relational calculus (en) Kalkül (Datenbank) (de) Cálculo relacional (es) Calcolo relazionale (it) 関係論理 (ja) 관계 논리 (ko) Реляційне числення (uk) Реляционное исчисление (ru) 关系演算 (zh)
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