What SQL command will allow you to change the table STUDENT to add the constraint named GradeCheck that states that the values of the Grade column must be greater than 0? ALTER TABLE STUDENT ALTER CONSTRAINT GradeCheck (Grade > 0); None of these ALTER TABLE STUDENT ADD CONSTRAINT GradeCheck CHECK (Grade > 0); ALTER TABLE STUDENT ADD CONSTRAINT GradeCheck (Grade > 0); TRUE ANSWER : ? YOUR ANSWER : ?
It is not easy to build a database correctly the first time. True False TRUE ANSWER : ? YOUR ANSWER : ?
Changing cardinalities in a database is: is impossible to do, so a new database must be constructed and the data moved into it. a database design task that never occurs. a rare database design task, but does occur. a common database design task. TRUE ANSWER : ? YOUR ANSWER : ?
A regular subquery can be processed: by nesting. None of these from the top down. from the bottom up. TRUE ANSWER : ? YOUR ANSWER : ?
Database redesign is not terribly difficult if the: database is relatively small. database is structured. database has no data. database is well-designed. TRUE ANSWER : ? YOUR ANSWER : ?
Some organizations take the stand that no application should ever employ the true name of a table. True False TRUE ANSWER : ? YOUR ANSWER : ?
The EXISTS keyword will be true if any row in the subquery meets the condition. True False TRUE ANSWER : ? YOUR ANSWER : ?
Because of the importance of making data model changes correctly, many professionals are ________ about using an automated process for database redesign. ambivalent None of these optimistic skeptical TRUE ANSWER : ? YOUR ANSWER : ?
How can you find rows that do not match some specified condition? NOT EXISTS EXISTS Double use of NOT EXISTS None of these TRUE ANSWER : ? YOUR ANSWER : ?