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- Domain_relational_calculus abstract "In computer science, domain relational calculus (DRC) is a calculus that was introduced by Michel Lacroix and Alain Pirotte as a declarative database query language for the relational data model.In DRC, queries have the form:where each Xi is either a domain variable or constant, and denotes a DRC formula. The result of the query is the set of tuples Xi to Xn which makes the DRC formula true.This language uses the same operators as tuple calculus,the logical connectives ∧ (and), ∨ (or) and ¬ (not). The existential quantifier (∃) and the universal quantifier (∀) can be used to bind the variables.Its computational expressiveness is equivalent to that of Relational algebra.".
- Domain_relational_calculus wikiPageID "217680".
- Domain_relational_calculus wikiPageRevisionID "595575563".
- Domain_relational_calculus hasPhotoCollection Domain_relational_calculus.
- Domain_relational_calculus subject Category:Logical_calculi.
- Domain_relational_calculus subject Category:Relational_model.
- Domain_relational_calculus comment "In computer science, domain relational calculus (DRC) is a calculus that was introduced by Michel Lacroix and Alain Pirotte as a declarative database query language for the relational data model.In DRC, queries have the form:where each Xi is either a domain variable or constant, and denotes a DRC formula.".
- Domain_relational_calculus label "Domain relational calculus".
- Domain_relational_calculus label "域关系演算".
- Domain_relational_calculus sameAs m.01fwfx.
- Domain_relational_calculus sameAs Q5289831.
- Domain_relational_calculus sameAs Q5289831.
- Domain_relational_calculus wasDerivedFrom Domain_relational_calculus?oldid=595575563.
- Domain_relational_calculus isPrimaryTopicOf Domain_relational_calculus.