Database Systems Practice Test 302

DBMS Keys MCQ (Multiple Choice Questions) PDF - 302

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DBMS Keys Questions and Answers PDF Download: Quiz 302

MCQ 1506: To denote a candidate key as the principal means of identifying tuples within a relation, is known to be

A) Super key

B) Unique key

C) Primary key

D) Superset key

MCQ 1507: In the model-view-controller (MVC) architecture, the view corresponds to the

A) Interface layer

B) Data-access layer

C) Domain object layer

D) Business-logic layer

MCQ 1508: At the physical level a record can be described as a

A) bit

B) Byte

C) Block

D) Data type

MCQ 1509: The values of the variables in a program at a point in time correspond to an

A) Instance of schema

B) Block of schema

C) Point in schema

D) Boundary of schema

MCQ 1510: The join operation that takes all tuples in left relation that is not matching with any tuple in the right relation, is called

A) Right outer join

B) Full outer join

C) Left outer join

D) Natural outer join

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