Concept of Relation Schema and a Relation

Question

Determine the concept of Relation Schema and a Relation?

Answer 1

Relation Schema and a Relation:

A relation Schema signified by R (A1, A2, ..., An), which is made up of the relation name R and the attributes list Ai which it have. A relation is explained as a set of tuples. Assume that r be the relation that contains set tuples (t1, t2, t3, ..., tn). All tuples are an ordered list of n-values as t=(v1,v2, ..., vn).