What do you understand by data independence?
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what are the two integrity rules used in DBMS?
What is the main purpose of triggers in database?
What do you understand by intension and extension?
What are the steps in creating a database?
What is a relation schema?
Explain a checkpoint and when does it occur?
IF Statements BLOCK 1 . IF a >= b THEN do_this …..; ELSE do_that….; END IF BLOCK 2 . IF a < b THEN do_that …..; ELSE do_this….; END IF; • Given any pair of non-NULL values for “a” and”b”, will Block 1 and Block 2 do the same thing? • What if either “a” or”b” (or both) is NULL?
What is use of dbms?
What is the use of GRANT option in EXP command ?
What are the main components of a database system?
What are five advantages of a database?
Why do we need foreign key?