Relational Database Management System Mcqs

Page No. 13

Which of the following OLAP systems do not exist?


aHOLAP


b MOLAP


cROLAP


d None of the mentioned



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


aCube


b Unknown


cDecode


d Substitute


View Answer Decode

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


a 1


b2


c 3


dNone of the mentioned


View Answer 2

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


aReduction


bIncrement


cRoll up


dDrill down


View Answer Roll up

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


aAlteration


bPivoting


cPiloting


d Renewing


View Answer Pivoting

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


aMono-dimensional data


bMulti-dimensional data


c Measurable data


dEfficient data



What is the full form of OLAP?


aOnline Application Programming


bOnline Application Processing


cOnline Analytical programming


dOnline Analytical Processing



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


a Multisets


b Multivalues


cMulticollections


d Multivariables


View Answer Multisets

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


aTrue


bFalse


ceither true of false


dnone of these


View Answer True

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


aAssignment


bModification


cAlteration


d Inclusion


View Answer Assignment

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