When the parent entity is required, a new parent row can always be inserted. True False 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 a foreign key the primary key a surrogate key TRUE ANSWER : ? YOUR ANSWER : ?
When the child entity is required, we are restricted from creating a new parent row without also creating a corresponding child row at the same time. True False TRUE ANSWER : ? YOUR ANSWER : ?
A primary key should be defined as: Either of the above can be used. None of these NULL. NOT NULL. TRUE ANSWER : ? YOUR ANSWER : ?
When the parent entity is required and the parent has a surrogate key, update actions can be ignored. True False TRUE ANSWER : ? YOUR ANSWER : ?
Which constraint requires that the binary relationship indicate all combinations that must appear in the ternary relationship? None of these MUST NOT MUST COVER Both of the above TRUE ANSWER : ? YOUR ANSWER : ?
When the parent entity is required, a new child row can always be inserted. True False TRUE ANSWER : ? YOUR ANSWER : ?
The terms alternate key and candidate key mean the same thing. True False TRUE ANSWER : ? YOUR ANSWER : ?