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Database Management System Practice Test 94

Query Trees Notations Quiz Questions PDF Download - 94

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Database Management System: Query Trees Notations Quiz PDF Download

MCQ: The data structure in the form of tree to correspond to relational algebra expression is classified as

A) relation tree
B) attribute tree
C) entity tree
D) query tree

MCQ: The types of relational calculi includes

A) domain calculus
B) nodes calculus
C) tuple calculus
D) both a and c

MCQ: In database management system, the current set of instance or database snapshot is also called

A) mathematical operators of schema
B) logical operators of schema
C) extension of schema
D) intension of schema

MCQ: The elements included in state chart diagrams are

A) transitions
B) condition markers
C) iteration markers
D) lifeline markers

MCQ: In Three-Schema Architecture, the schema in which the part of database is described to the user group who is interested and other details are kept hide is called

A) logical schema
B) conceptual schema
C) internal schema
D) external schema

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