Database Systems Practice Test 379

DBMS Design Process Quiz PDF: Questions and Answers - 379

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DBMS Design Process Questions and Answers PDF Download: Quiz 379

MCQ 1891: The implementation data model is basically the

A) Entity-relationship model

B) Relational data model

C) Structural model

D) Object based relation model

MCQ 1892: The term that takes a query-evaluation plan, executes the plan, and returns the answers to the query, is called

A) Query-execution engine

B) Query-plan engine

C) Execution engine

D) Query-evaluation engine

MCQ 1893: Attributes from the fetched tuple are retrieved using

A) Methods

B) Objects

C) Instances

D) Shipment

MCQ 1894: A write operation in multiversion timestamp ordering, may result into the

A) Abortion of transaction

B) Termination of transaction

C) Rollback of transaction

D) Waiting of transaction

MCQ 1895: An association among several entities, is known as a

A) Connection

B) Relationship

C) Agreement

D) Integration

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