WBUT 2013 DATA WAREHOUSING AND DATA MINING Question Paper (Paper code IT-704C)

Submitted by Anonymous (not verified) on Mon, 02/03/2014 - 22:28

# N. B.: WBUT compiled two separate sets of papers for IT and CSE branches for the same subject.

CS/B.TECH/IT (New)/SEM-7/IT-704C/2013-14

2013

DATA WAREHOUSING AND DATA MINING

Time Allotted : 3 Hours                                    Full Marks : 70

The figures in the margin indicate full marks.

Candidates are required to give their answers in their own words

as far as practicable.

GROUP – A

(Multiple Choice Type Question)

1.       Choose the correct alternatives for the following:          10 x 1 = 10

          i)        A data warehouse is said to contain a ‘time-varying’ collection of data because

                   a)       its contents vary automatically with time

                   b)       its life-span is very limited

                   c)       it contains historical data

                   d)       its content has explicit time-stamp.

          ii)       A data warehouse is said to contain a ‘subject-oriented’ collection of data because

                   a)       its contents have a common theme

                   b)       it is built for a specific application

                   c)       it cannot support multiple subjects

                   d)       it is generalization of ‘object-oriented’.

          iii)      A data warehouse is built as a separate repository of data, different from the operational data of an enterprise because

                   a)       it is necessary to keep the operational data free of any warehouse operation

                   b)       a data warehouse cannot afford to allow corrupted data within it

                   c)       a data warehouse contains summarized data whereas the operational database contains transactional data

                   d)       it is just needed.

 

 

 

Comments

Related Items