Difference Between The Terms Relation And Relation Schema

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What is the difference between an entity relationship model and a relational model? and also for a mathematical ordered-tuple set representing one, is a "relation". represents information as tuples, directly mapped to a relational schema. By posting your answer, you agree to the privacy policy and terms of service. RDFS offers taxonomic relations, object relations and datatype properties. Web Layer cake so I want to understand the difference between these two layers?

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تاریخ انتشار 2015