mid_III_dw - [5 Q.3 Design a data mart for storing and...

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Birla Institute of Technology & Science, Pilani Distance Learning Programmes Division Second Semester 2008-2009 Mid-Semester Test (EC-1 Regular) Course No. : SS ZG515 Course Title : DATA WAREHOUSING Nature of Exam : Closed Book Weightage : 40% Duration : 2 Hours Date of Exam : 07/02/2009 (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 used inside the examination hall. 4. Use of any unfair means will result in severe disciplinary action. Q.1 What are the limitations of ER modeling when used for modeling data in Data Warehouses? [5] Q.2 What are the kinds of analysis that can be performed on Data Warehouse data?
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Unformatted text preview: [5] Q.3 Design a data mart for storing and analyzing Alumni Data of BITS. Give the analysis requirements first. Give example of some analysis queries that can be answered using your schema. Also give some example tuples for all the tables in your schema. And suggest partitioning and aggregation strategies. Did the phenomenon of sparsity failure occur while creating aggregates? [8] Q.4 What are the advantages and disadvantages of having finest granularity data in the data warehouse? [8] Q.5 Explain why we go for normalization in designing operational systems and why we avoid it in designing data warehousing systems. [7] Q.6 Some information that is essential for an operational system but is not required in a data warehouse system. Give examples. [7] ********** No. of Pages = 1 No. of Questions = 6...
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  • Spring '11
  • raj
  • data warehouse data, Pilani Distance Learning, Course Title Nature, Exam Weightage Duration, finest granularity data

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