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Database Systems Practice Test 313

Set Operations Quiz Questions and Answers PDF - 313

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Set Operations Questions and Answers PDF Download: Quiz 313

MCQ 1561: The result of Boolean expression 'true or unknown' is

A) False
B) Null
C) Unknown
D) True

MCQ 1562: Database systems have several schemas, partitioned according to the

A) Data
B) Constraints
C) Requirement
D) Level of abstraction

MCQ 1563: The number of errors in the following subquery is/are
(select salary
from instructor
where dept name=Biology)

A) 0
B) 1
C) 2
D) 3

MCQ 1564: Query processor component of the database system translates DML queries into sequences of actions at the

A) Physical Level
B) Logical Level
C) View Level
D) Virtual Level

MCQ 1565: The difference of entities must be expressed in terms of their

A) Values
B) Locators
C) Size
D) Attributes

Database Systems Exam Prep Tests

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Set Operations App (Android & iOS)

Set Operations App (Android & iOS)

Database Management System App (Android & iOS)

Database Management System App (Android & iOS)

Digital Logic Design App (Android & iOS)

Digital Logic Design App (Android & iOS)

Operating Systems App (Android & iOS)

Operating Systems App (Android & iOS)