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Database Systems Practice Test 45

DBMS: Selection Operation Quiz Questions and Answers PDF - 45

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DBMS: Selection Operation Quiz Questions PDF Download: Test 45

MCQ 221: A predicate that by satisfying individual simple condition, satisfies the union of all records is called the

A) Conjunction condition
B) Disjunction condition
C) Negation condition
D) A9 condition

MCQ 222: An entity-relationship diagram provides a graphical representation of the

A) Context
B) Framework
C) Schema
D) Modules

MCQ 223: The database user assigns entities to a given entity set, in the type of generalization's constraints

A) Data-defined
B) User-defined
C) System-defined
D) Condition-defined

MCQ 224: If 'A' is null for a particular tuple, then the expression result must also be null for that

A) Expression
B) Attribute
C) Tuple
D) Relation

MCQ 225: A schema is said not to be in a desirable normal form, if its relationship sets are involving

A) One entity set
B) Two entity sets
C) More than two entity sets
D) No entity sets

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