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Database Management System Practice Test 28

# Equivalence of Sets of Functional Dependency MCQ Questions and Answers PDF - 28

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## Equivalence of Sets of Functional Dependency MCQ with Answers : Quiz 28

MCQ 136: The functional dependency of two sets E and F are considered as equivalent if

A) E + F = E - F
B) E * = F 2
C) E 2 = F 2
D) E * = F *

MCQ 137: The type of legacy data model in which related records are represented by each hierarchy in the tree structure is classified as

A) network relational models
B) legacy network model
C) hierarchy models
D) network model

MCQ 138: The DVD devices and CD-ROM are examples of

A) mass storage
B) main memory
C) memory databases
D) flash memories

MCQ 139: The constraint violated when the given value of attribute is not included in the corresponding domain is

A) domain constraint
B) attribute constraint
C) key constraint
D) lock constraint

MCQ 140: The data type which can be fixed length or varying length as CHAR(n) and VARCHAR(n) respectively is classified as

A) ternary string
B) binary string
C) schema string
D) character-string

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