Consider all the problems that doing so would create, particularly in terms of the unnecessary duplicated data. Note: Although it is theoretically possible to write a DBMS that will store an unlimited number of values in an attribute, the implementation would be difficult and searching much slower...
The fundamental notion is that of a dependency basis for an attribute set X ⊆ R with respect to a set Σ of MVDs [4]. Given some set Σ = {X1 Y1, . . . , Xk Yk} of MVDs with k⋃ i=1 (Xi ∪ Yi) ⊆ R t......
b) A multivalued attribute of an entity set c) A one-to-many relationship set d) None of the mentioned View Answer 8. In which of the following, a separate schema is created consisting of that attribute and the primary key of the entity set. a) A many-to-many relationship set b) ...