The use of the double NOT EXISTS can be used to find rows that do not match some specified condition. False True TRUE ANSWER : ? YOUR ANSWER : ?
The NOT EXISTS keyword will be true if: neither of these two conditions is met. any row in the subquery meets the condition. all rows in the subquery fail the condition. both of these two conditions are met. TRUE ANSWER : ? YOUR ANSWER : ?
Which SQL-92 standard SQL command can be used to change a table name? None of these ALTER TABLE CHANGE TABLE RENAME TABLE TRUE ANSWER : ? YOUR ANSWER : ?
A regular subquery can be processed: from the top down. by nesting. None of these from the bottom up. TRUE ANSWER : ? YOUR ANSWER : ?
Reverse engineering is the process of reading a database schema and producing a data model from that schema. False True TRUE ANSWER : ? YOUR ANSWER : ?
How many copies of the database schema are typically used in the redesign process? Four Three One Two TRUE ANSWER : ? YOUR ANSWER : ?
What SQL command can be used to delete columns from a table? MODIFY TABLE TableName DROP ColumnName ALTER TABLE TableName DROP ColumnName ALTER TABLE TableName DROP COLUMN ColumnName MODIFY TABLE TableName DROP COLUMN ColumnName TRUE ANSWER : ? YOUR ANSWER : ?
Database redesign is especially difficult if the database has no data. False True TRUE ANSWER : ? YOUR ANSWER : ?
The SQL-92 command to change a table name is RENAME TABLE. False True TRUE ANSWER : ? YOUR ANSWER : ?
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 TRUE ANSWER : ? YOUR ANSWER : ?