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NATIONAL OPEN UNIVERSITY OF NIGERIA
UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCES
JUNE/JULY 2013 EXAMINATION
COURSE CODE: DAM301
COURSE TITLE: DATA MINING AND DATA WAREHOUSING (3 UNITS)
TIME ALLOWED: 21/2 HOURS
INSTRUCTION: ANSWER ANY FOUR QUESTIONS IN ALL
1a. Write short note on any three (3) data mining issue. [7.5 marks]
1b Discuss any four (4) challenges that likely face by the data mining practitioners. [10 marks]
2a. Itemise any (10) technologies or tools used in data mining. [10 marks]
2b. What is a Neural Network in a data mining technology? [7.5 marks]
3a. Explain with the aid of diagram what is meant by Decision tree. [10 marks]
3b. List the three (3) common types of data preparation methods. [7.5 marks]
4a. Explain “why Data Preprocessing”? [10 marks]
4b. Write short note on Multimedia Data Mining. [7.5 marks]
5a. Itemise the data mining trends in terms of technologies which are presently being developed and researched. [7.5 marks]
5b. Write short note on any four (4) Constraint Based Data mining [10 marks]
6a. Write short note on Multifactor dimensionality reduction. [7.5 marks]
6b. Differentiate between Relational Database and Data Warehouses. [10 marks]
