Rajasthan Technical University 2010-7th Sem B.Tech Computer Science and Engineering (Main) Computer science & engineering, Data Mining and Warehouseing - Question Paper

Rajasthan tech. University
B.Tech seven sem (Main)
Computer science & engineering,Jan 2010

(7CS2) Data Mining and Warehouseing

"CNll Roll No. :J_:_ Tout prmn fag.. .fT]

.    . 7E4092

B.Tech. (Sem. VII) (Main) Examination, January - 2010 H Computer Science

(7CS2 Data Mining and Warehousing)

Time: 3 Hours]    [Total Marks: M

[Mir. Passing Marks: 24

Attempt overall ftV* questions selecting one question from each unt. All questions carry equal marks (Schematic diagrams tnust be shown wherever necessary. Any data you feel missing may suitably be assumed and stated clearly. Units of quantities used/calculated must be stated clearly.)

Use of following sopporting material is permitted during examination. (Mentioned in form No. 205)

1. ___________M_________ . . 2.__m_________________

UNIT - I

1 (a) . Describe the hiajor elements of data mining.

8

(b) Explain the term missing value. N'oisv data and data cleaning.

8

OR

1    (a) What is data integration and transformation ? Explain with

example.

10

(b) Explain data cube aggregation m brief.

6

UNIT - II

2    (a) What is mining association rule ? - Explain

6

(b) Describe techniques to improve efficiency of mining asij<> lation rules.

)0

OK

7E4092] !l!UNllK|ili|l|i I     (Cornel...

f. 4

1 (a) Explain in brief the measure of central tendency.

(b) Explain Apriori algorithm with an example.

12

UNIT -III 1    OmmuT Bayes diwitwi in detail.

OR

3    (a) Differentiate between feed forward and feedback system.

8

(b) Explain K-means clustering.

... _g

UNIT - IV

4    (a) What is data- warehousing ? - Explain.

8

(b) Write short note on data marting.

8'

OR

4 Explain conceptual modeling of data warehouses.

16

UNIT - V

(a)-    What are the different security issues in data warehousing ?

8

(b)    Explain testing data 'quality using cross-footing techniques.

8

OR

Write short notes on :

(i)    OLAP tools.

8

(ii)    Backup and recovery with respect to data warehousing.

8

7E4092] IfflMitflimjS 2    [ 4500 )

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Earning:   Approval pending.