Relational Database Management System Mcqs

Page No. 13

Which of the following OLAP systems do not exist?


aHOLAP

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b MOLAP

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cROLAP

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d None of the mentioned

✓



The _______ function allows substitution of values in an attribute of a tuple


aCube

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b Unknown

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cDecode

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d Substitute

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View Answer Decode

How many dimensions of multi-dimensional data do cross tabs enable analysts to view?


a 1

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b2

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c 3

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dNone of the mentioned

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View Answer 2

The operation of moving from finer granular data to coarser granular data is called _______


aReduction

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bIncrement

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cRoll up

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dDrill down

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View Answer Roll up

The operation of changing a dimensions used in a cross-tab is called as ________


aAlteration

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bPivoting

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cPiloting

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d Renewing

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View Answer Pivoting

Data that can be modelled as dimension attributes and measure attributes are called ___________


aMono-dimensional data

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bMulti-dimensional data

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c Measurable data

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dEfficient data

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What is the full form of OLAP?


aOnline Application Programming

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bOnline Application Processing

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cOnline Analytical programming

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dOnline Analytical Processing

✓



The collections on which aggregate functions can operate are called as __________


a Multisets

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b Multivalues

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cMulticollections

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d Multivariables

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View Answer Multisets

State true or false: There exists a division operator in Relational Algebra


aTrue

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bFalse

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ceither true of false

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dnone of these

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View Answer True

Updating, Deleting and Inserting in relational algebra is done using the ________ operator


aAssignment

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bModification

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cAlteration

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d Inclusion

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View Answer Assignment

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