Introduction to SQL Which SQL keyword is used to retrieve only unique values? DISTINCTIVE DISTINCT DIFFERENT UNIQUE DISTINCTIVE DISTINCT DIFFERENT UNIQUE ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL COUNT(field_name) tallies only those rows that contain a value; it ignores all null values. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL In SQL, which command is used to change a table's storage characteristics? None of these ALTER TABLE MODIFY TABLE CHANGE TABLE None of these ALTER TABLE MODIFY TABLE CHANGE TABLE ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Most companies keep at least two versions of any database they are using. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Each index consumes extra storage space and also requires overhead maintenance time whenever indexed data change value. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL In SQL, which of the following is not a data definition language commands? GRANT UPDATE RENAME REVOKE GRANT UPDATE RENAME REVOKE ANSWER DOWNLOAD EXAMIANS APP