Which of the following is not correct? (a)Each entity must include some descriptive inform
Which of the following is not correct?
(a)Each entity must include some descriptive information
(b)If an object only requires an identifier, it should be classified as an attribute
(c)Each multivalued attribute should be classified as an entity even if it does not have any descriptive information
(d)The procedure of identifying entities and attaching attributes always leads to a unique solution
(e)Every entity is a collection of attributes.