Database Redesign 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 ADD CONSTRAINT GradeCheck CHECK (Grade > 0); ALTER TABLE STUDENT ADD CONSTRAINT GradeCheck (Grade > 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); ALTER TABLE STUDENT ALTER CONSTRAINT GradeCheck (Grade > 0); None of these ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Which is not true of a correlated subquery? EXISTS/NOT EXISTS is a form of a correlated subquery. They are very similar to a regular subquery. They can be used to verify functional dependencies. The processing of the SELECT statements is nested. EXISTS/NOT EXISTS is a form of a correlated subquery. They are very similar to a regular subquery. They can be used to verify functional dependencies. The processing of the SELECT statements is nested. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign A tool that can help designers understand the dependencies of database structures is a: graphical display. data model. None of these dependency graph. graphical display. data model. None of these dependency graph. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign How many copies of the database schema are typically used in the redesign process? Three Four One Two Three Four One Two ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Because of the importance of making data model changes correctly, many professionals are ________ about using an automated process for database redesign. None of these ambivalent optimistic skeptical None of these ambivalent optimistic skeptical ANSWER DOWNLOAD EXAMIANS APP
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