ER Model and Business Rules A subtype discriminator of the supertype is an attribute whose values determine the target subtype(s). True False True False ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules When an entity instance must be a member of only one subtype, it is which of the following? Overlap with total specialization Disjoint with total specialization Disjoint with partial specialization Overlap with partial specialization Overlap with total specialization Disjoint with total specialization Disjoint with partial specialization Overlap with partial specialization ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules There is cardinality on an EER between the supertype and subtype. True False True False ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules Packaged data models are meant to be exactly right straight out of the box. False True False True ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules Which one of the following symbols is not used in an ERD? Oval Diamond Circle Rectangle Oval Diamond Circle Rectangle ANSWER DOWNLOAD EXAMIANS APP
ER Model and Business Rules Total specialization is represented by double lines between the supertype and subtype on an EER. True False True False ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS