1.Among the following Set operations the _________operation

is most costly.

A.UNION, B.INTERSECTION, C.SET DIFFERENCE D.CARTESIAN PRODUCT2. _________ lookup firstly starts executing the outer query and when outer

rows are generated then it invokes the sub-query

A.forward B.reverse C.center D.top

3. .________ is defined as a set of rows which is used to encode the

changes to a specific base table.

A.semantic data B.centralize data C.delta stream D.gama stream

4. Physical query strategy is made from _________

A.relation B.operand C.operator Dfunction.

5. The buffer manager allocates buffers in _______ memory.

a.virtual b.cache memory c.main memory D.rom6. The basic outline of a Heuristic Algebraic Optimization Algorithm is given below.

1. Break up any SELECT operations by means of conjunctive operations

into a cascade of SELECT operations.

2. Move each and every SELECT operation as far down the query tree as

is allowed by the attributes which are involved in the select condition.

A.both are false B.both are trueC.statement 1 only true D.statement 2 only true

7. ._______ Locks just prevent other transactions from editing (writing to) the data item

A.read B.write C.exclusive D.dead

8. .In ________ lock only one user is permitted to update a specific part of data

A.shared B.exclusive C.write D.read

9. Transactions with unexpected read write locks can make use of_______LocksA.shared B.upgrading C.write D.update

10. The purpose of concurrency control is to guarantee the transactions serialisability in the environment of a______ database.

A.single-user B.multi-user C.double-user D.triple-user

11. Write-ahead protocol makes sure that transaction logs are always written _______ any database data that are really updated. A.after B.before C.first D.last

12. A clear solution to the issue of maintaining locks in a distributed database is considered as _________locking

A.centralized B.symbolic C.relative D.conditional

13. ._________ locking defines the process of acquiring and giving up the locks.

A.one-phase B.two-phase C.three-phase D.multi-phase

14. The capability of class to inherit the variables and methods from numerous superclasses is known as_______inheritance.

A.multilevel B.multiple C.single D.dual

15. The _______ clause provides permission to arrange the data retrieved in the variables.A.order-by B.having C.group by D.where

16. ______ assesses to the group of nodes in 'a' that takes place previous to some node in 'b'.

(A).a BEFORE b (B). a after b.. (C).a INTERSECT b (D). a EXCEPT b.

17. What does the CREATE TRIGGER statement states?

a) trigger name b) trigger class c) trigger function d) trigger variable

18. ._________ database stores data with respect to transaction time.

A.rollback B.historical C.bitemporal D.temporal

19. ._______is a relational model database server developed by IBM.

A.sql B.DB2 C.oracle D.pl/sql

20. A__________is very significant resource, it requires tough, protected and easily obtainable software that can collect and utilize it fast.

A.information B.Data. C.storage D.release

21. .______________process results in wasting storage area.

A.redundancy B. atomicity C. flexibility. D.integrity.

22. Security guidelines are defined by DBMS to use the ________.

A.information B.storage C.data D.record

23. .___________constraints can be defined and applied means of DBMS.

A.integrity B.redundancy. C.flexibility D.atomicity..

24. The commands that can be issued against database by clients are known as___________.

A.queries. B.sequence C.view D.cursor

25. The machine which is utilized for running DBMS and includes a databse is considered as the ___________ of database.

A.server B.client C.desktop D.program

26. moving a part of data from one position to the other position needs you to modify _______ accessing application related to that data which is complicated to perform. A.one B.two C.every D.no 27. The relations ______ is based on how many attributes exists in respective relation schema

A.schema B.degree C.feild D.record

28. The relations ______ is based on how many attributes exists in respective relation schema

A.schema B.degree C.feild D.record

29. .OLTP stands for ___________.

A. online transaction processing systemsB.order transaction processing systems

C.online transaction processing software D.online truncation processing systems

30. In _______ databse data is administrated by a central DBMS.

A.one-tier B.client-server C.centralizedD.distributed