Q. A Delete command operates on ______ relation.

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Q. Delete from r where P;
The above command

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Q. Which one of the following deletes all the entries but keeps the structure of the relation .

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Q. Which of the following is used to insert a tuple from another relation.

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Q. Which of the following deletes all tuples in the instructor relation for those instructors associated with a department located in the Watson building which is in department relation.

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Q. UPDATE instructor
_____ salary= salary * 1.05;

Fill in with correct keyword to update the instructor relation.

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Q. _________ are useful in SQL update statements,where they can be used in the set clause.

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Q. The problem of ordering the update in multiple update is avoided using

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Q. Which of the following is the correct format for case statements.

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Q. Which of the following relation updates all instructors with salary over $100,000 receive a 3 percent raise, whereas all others receive a 5 percent raise.

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Q. SELECT *
FROM student JOIN takes USING (ID);

The above query is equivalent to

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Q. In SQL the statement select * from R, S is equivalent to

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Q. For the view Create view instructor_info as

SELECT ID, name, building
FROM instructor, department
WHERE instructor.dept name= department.dept name;

If we insert tuple into the view as insert into instructor info values (’69987’, ’White’, ’Taylor’);

What will be the values of the other attributes in instructor and department relations?

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Q. A _________ consists of a sequence of query and/or update statements.

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Q. Which of the following makes the transaction permanent in the database ?

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Q. In order to undo the work of transaction after last commit which one should be used ?

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Q. Consider the following action:

TRANSACTION.....
Commit;
ROLLBACK;

What does Rollback do?

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Q. In case of any shut down during transaction before commit which of the following statement is done automatically?

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Q. In order to maintain the consistency during transactions database provides

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Q. Which of the following is used to get back all the transactions back after rollback ?

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