comp_V_Dw - Birla Institute of Technology & Science,...

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Birla Institute of Technology & Science, Pilani Distance Learning Programmes Division Second Semester 2007-2008 Comprehensive Examination (EC-2 Regular) Course No. : SS ZG515 Course Title : DATA WAREHOUSING Nature of Exam : Open Book Weightage : 60% Duration : 3 Hours Date of Exam : 29/03/2008 (AN) Note: 1. Please follow all the Instructions to Candidates given on the cover page of the answer book. 2. All parts of a question should be answered consecutively. Each answer should start from a fresh page. 3. Mobile phones and computers of any kind should not be brought inside the examination hall. 4. Use of any unfair means will result in severe disciplinary action. Q.1 Explain the difference between destructive merge and constructive merge for applying data to the data warehouse repository. When do you use these modes? [7] Q.2 Suppose a data warehouse consists of three dimensions time, doctor, and patient , and the two facts count and charge , where charge is the fee that a doctor charges a
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comp_V_Dw - Birla Institute of Technology & Science,...

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