Question 11 :
What operator performs pattern matching?
Question 12 :
What is the use of the DROP option in the ALTER TABLE command?
It is used to drop constraints specified on the table.
Question 13 :
What operator tests column for the absence of data?
IS NULL operator.
Question 14 :
What are the privileges that can be granted on a table by a user to others?
Insert, update, delete, select, references, index, execute, alter, all.
Question 15 :
Which function is used to find the largest integer less than or equal to a specific value?