DBMS MCQ Questions and Answer Set-3


1. What operator tests the column for the absence of data? A. EXISTS operator B. NOT operator C. IS NULL operator D. None of these Answer:  C 2. In SQL, which command(s) is (are) used to change a table‚Äôs storage characteristic? A. ALTER TABLE B. MODIFY TABLE C. CHANGE TABLE D. All of the above … Read more