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NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCES
MAY/JUNE 2012 EXAMINATION

DAM 301 DATA MINING AND DATA WAREHOUSING

TIME ALLOWED: 3 HOURS

INSTRUCTION: ANSWER ANY FIVE QUESTIONS IN ALL

 

1a. Describe Data mining. [5 marks]

1b. List and define all the steps involved in Knowledge Discovery Databases (KDD) process. [7 marks]

1c. Briefly explain the scope of data mining under the following headings:

i. Automated prediction of trends and behaviours. [4 marks]

ii. Automated discovery of previously unknown patterns. [4 marks]

 

2a. Explain any 5 types of data/information often collected in digital form in databases and flat files. [10 marks]

2b Describe the following data mining terms?

i. Characterization. [2 marks]

ii. Clustering. [2 marks]

iii. Discrimination. [2 marks]

2c. Briefly explain any 2 types of data that can be mined. [4 marks]

 

3a. Write short note on any three (3) classifications of data mining systems. [6 marks]

3b. Write notes on any three (3) data mining issue. [6 marks]

3c Discuss any four (4) challenges that may likely face by the data `mining practitioners. [8 marks]

 

4a. Itemise ten (10) technologies or tools used in data mining. [5 marks]

4b. what is a Neural Network in a data mining technology? [4 marks]

4c. Explain with the aid of diagram what is meant by Decision tree. [11 marks]

 

5a. Highlight the three (3) common types of data preparation methods. [6 marks]

5b. Describe “why Data Pre-processing”? [6 marks]

5c. Data Mining Applications has a role to play in effective performance of Healthcare industries. Discuss. [8 marks]

6a. Data Mining Applications play some vital roles in Banking and Finance industries. Discuss.

6b. Define Data Description and highlight sixteen (16) properties that are documented in a typical Data Description Report. [8 marks]

6c. Explain what is meant by Data Mining Technologies. [4 marks]

 

7a. Write short note on Multimedia Data Mining. [6 marks]

7d. List and describe the characteristics of a data warehouse as set forth by William Inmon. [10 marks]

7c. Define a data warehouse. [4 marks]


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