DBMS MCQ Questions and Answer Set-3

DBMS-MCQ
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 Answer:  A 3. A command that lets you change one or more fields in a record is A. Insert B. Modify C. Look-up D. All of the above Answer: B ...
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DBMS MCQ Questions and Answer Set-5

DBMS-MCQ
Very important DBMS MCQ Questions . 1.   Which data manipulation command is used to combines the records from one or more tables? A. SELECT B. PROJECT C. JOIN D. PRODUCT 2.   SQL permits attribute names to be repeated in the same relation. (True or False) A. FALSE B. TRUE 3.   Which of the following operations requires the relations to be union compatible? A. UNION B. INTERSECTION C. DIFFERENCE D. ALL OF THESE 4. &nbsp...
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