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APPLY LATEST GOVT JOBS

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Q.11 In the architecture of a database system external level is the
(A). physical level.
(B). logical level.
(C). conceptual level
(D). view level.


Q.12 An entity set that does not have sufficient attributes to form a primary key is a
(A). strong entity set.
(B). weak entity set.
(C). simple entity set.
(D). primary entity set.


Q.13 In a Hierarchical model records are organized as
(A). Graph.
(B). List.
(C). Links.
(D). Tree. DC10 DATABASE MANAGEMENT SYSTEMS 3


Q.14 In an E-R diagram attributes are represented by
(A). rectangle.
(B). square.
(C). ellipse.
(D). triangle.


Q.15 In case of entity integrity, the primary key may be
(A). not Null
(B). Null
(C). both Null & not Null.
(D). any value.