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Database Management System Practice Test 112

EER Model Concepts Quiz Questions PDF Download - 112

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Database Management System: EER Model Concepts Quiz PDF Download

MCQ: In the enhanced-entity-relationship, the collection of entities in the form of set is classified as

A) object
B) schema
C) class
D) construct

MCQ: The expression of generalized projection can be written as

A) π F1, F2, Fn ( R )
B) θ F1, F2, Fn ( R )
C) σ F1, F2, Fn ( R )
D) β F1, F2, Fn ( R )

MCQ: The entity involved in the process of specialization is considered as

A) medium class of entity
B) mini class of entity
C) subclass of entity
D) super class of entity

MCQ: The complete description of database which is described in design phase and is changed rarely is called

A) schema
B) structure
C) path of design
D) data cycle scheme

MCQ: The step in database design in which the high level data model is converted into the model of data implementation is considered as

A) physical design of database
B) data model mapping
C) logical design
D) both a and c

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