Q.11. Full form of DBMS
(A) Date base management
(B) Document Base Management System
(C) Digital Base Management System
(D) None of them
Q.12. It is an abstraction through which relationships are treated as higher level entities
(A) Generalization
(B) Specialization
(C) Aggregation
(D) Inheritance
Q.13. A relation is in ………..if an attribute of a composite key is dependent on an attribute of other composite key.
(A) 2NF
(B) 3NF
(C) BCNF
(D) 1NF
Q.14.What is data integrity?
(A) It is the data contained in database that is non-redundant
(B) it is the data contained in database that is accurate and consistent
(C) it is the data contained in database that is secured.
(D) It is the data contained in database that is shared.
Q.15. What are the desirable properties of a decomposition
(A) Partition constraint
(B) Dependency preservation
(C) Redundancy
(D) Security
Q.16. In an E-R diagram double lines indicate
(A) Total participation
(B) Multiple participation
(C) Cardinality N
(D) None of the above
Q.17. The operation which is not considered a basic operation of relational algebra is
(A) Join
(B) Selection
(C) Union
(D) Cross product
Q.18. Fifth Normal form is concerned with
(A) Functional dependency
(B) Multivalued dependency
(C) Join dependency
(D) Domain – key
Q.19. Block-interleaved distributed parity is RAID level
(A) 2
(B) 3
(C) 4
(D) 5
Q.20. Immediate database modification technique uses
(A) Both undo and redo.
(B) Undo but no redo.
(C) Redo but no undo.
(D) Neither undo nor redo.
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