FACULTY OF INFORMATICS B.E. 3/4 (IT) I – Semester (New) (Suppl) Examination, May 2013 Subject : Database Management Systems Time : 3 hours
Max. Marks : 75
Note: Answer all questions from Part-A and answer any FIVE questions from Part-B. PART – A (25 Marks) 1. What are the responsibilities of a database administrator?
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2. Write about any four different mapping cardinalities.
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3. How to represent aggregate functions in relational algebra? Give an example.
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4. What is a join operation and list different types of joins?
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5. Define an assertion and write how they are created.
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6. What is the difference betwen 3NF and BCNF?
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7. State the purpose of indexing.
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8. Define write-time stamp and read-time stamp of a data item.
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9. Write Thomas write rule.
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10. What are the steps followed in dead lock recovery?
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PART – B (50 Marks) 11.a) Draw and explain each and every component of database architecture. b) What are the functions of a database administrator? 12.a) Discuss in detail E.R. diagram design issues. b) Write the basic structure of an SQL query with an example. 13.a) Explain any five integrity constraints with examples. b) Write about decomposition using functional dependencies. 14.a) Compare static Hashing and dynamic hashing. b) Discuss about view-serializability.
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15. Discuss in detail lock-based protocols with examples.
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16. Discuss the differed and immediate modification versions of log based recovery schemes.
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17. Write short notes on : a) Views in SQL b) Generalization and specialization c) Embedded SQL
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