Which constraint requires that the binary relationship indicate all combinations that must appear in the ternary relationship? None of these MUST COVER Both of the above MUST NOT TRUE ANSWER : ? YOUR ANSWER : ?
When the parent entity is required and the parent has a surrogate key, update actions can be ignored. False True TRUE ANSWER : ? YOUR ANSWER : ?
If a relationship has a cascade updates constraint, then if ________ in the parent table is changed, then the same change will automatically be made to any corresponding foreign key value. any alternate key the primary key a foreign key a surrogate key TRUE ANSWER : ? YOUR ANSWER : ?
Intersection tables are ID-dependent on both their parent tables. False True TRUE ANSWER : ? YOUR ANSWER : ?
When transforming an entity-relationship model into a relational database design, each entity is represented as a table. True False TRUE ANSWER : ? YOUR ANSWER : ?
When the parent entity is required, a new parent row can always be inserted. True False TRUE ANSWER : ? YOUR ANSWER : ?
A unique, DBMS-supplied identifier used as the primary key of a relation is called a(n): foreign key. primary key. surrogate key. composite key. TRUE ANSWER : ? YOUR ANSWER : ?
For every relationship, there are six possible sets of minimum cardinalities. False True TRUE ANSWER : ? YOUR ANSWER : ?
In a 1:1 relationship, the foreign key is placed in: either the parent table or the child table. the child table. the parent table. either table without specifying parent and child tables. TRUE ANSWER : ? YOUR ANSWER : ?