Logical Database Design A composite attribute does not get mapped into a relation. False True False True ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A foreign key may be null and still adhere to the referential integrity constraint. False True False True ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A primary key may be null. True False True False ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design The primary key of the new relation in a many-to-many relationship is a composite key comprised of the primary keys of each of the binary entities. False True False True ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design When mapping a supertype/subtype relationship which of the following is true? There is no primary key/foreign key relationship between a supertype/subtype. There is no link between the supertype/subtype entities. The subtype primary key is assigned to each supertype. The supertype primary key is assigned to each subtype. There is no primary key/foreign key relationship between a supertype/subtype. There is no link between the supertype/subtype entities. The subtype primary key is assigned to each supertype. The supertype primary key is assigned to each subtype. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design The relational model consists of: operations using non-SQL languages. unorganized data. data redundancy. data in the form of tables. operations using non-SQL languages. unorganized data. data redundancy. data in the form of tables. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS