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Database Management System

141.

The normal form that is not necessarily dependency preserving is

Answer: A

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Answer: C

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143.

The relational model is based on the concept that data is organized and stored in two-dimensional tables called ______
 

Answer: C

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144.

A _____ is used to define overall design of the database

Answer: D

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Answer: A

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146.

The default level of consistency in SQL is

Answer: D

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147.

If a transaction T has obtained an exclusive lock on item Q, then T can

Answer: C

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148.

Which one is correct statement?
Logical data independence provides following without changing application programs:
(i) Changes in access methods.
(ii) Adding new entities in database
(iii) Splitting an existing record into two or more records
(iv) C

Answer: D

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Answer: C

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150.

DBMS is a collection of _____ that enables user to create and maintain a database.

Answer: B

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