Technical Education ARKujur

Relational database design are the best system analysis. One should be able to specify how entities within a given entity set and relationships within a given relationship set are distinguished.There are some subset of attributes of a relational schema R present with the property that no two tuples in any relation instance r of R should have the same combination of values for these attributes. Closure of a Set of functional Dependencies We say that such functional Dependencies are logically implied by F.           Suppose we are given a relation schema R=(A,B,C,G,H,I) and the set of functional Dependencies                        A ➡️ B                        A ➡️ C                      CG ➡️ H                      CG ➡️ I    ...