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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034 M.C.A. DEGREE EXAMINATION – COMPUTER APPLICATIONS THIRD SEMESTER – November 2009 CA 3800 - DATABASE MANAGEMENT CONCEPTS Date & Time: 03/11/2009 / 9:00 - 12:00 Dept. No. Max. : 100 Marks PART – A Answer ALL questions 1. Define entities. (10 x 2 =20 ) 2. What are the components used for representing E-R diagram? 3. Write a SQL command to display data in descending order. 4. Comment on TCL commands. 5. Define normalizations. 6. Draw the E-R diagram for Inventory application. 7. What are the steps involved in Query processing. 8. Define Equivalence. 9. What are the types of Transaction failure? 10. Write any two features of Oracle. PART – B Answer ALL questions 11. a) Write short notes on Relational database design with an example. (5 x 8 =40 ) (or) b) Explain the keys related to Entity set and Relationship set 12. a) Create the table with the following fields and values using the SQL statement – (1 mark). O_Id 1 2 3 4 5 6 OrderDate 2008/11/12 2008/10/23 2008/09/02 2008/09/03 2008/08/30 2008/10/04 OrderPrice 1000 1600 700 300 2000 100 Customer Hansen Nilsen Hansen Hansen Jensen Nilsen i) Find if any of the customers have a total order of less than 2000 – (2 marks) ii) Delete the records having order price greater than 700 – (1 mark). iii) Add a new column as customer no – (2 marks). iv) Select the customers name equal to “Hansen” or “Nilsen” from the above table-(2 marks). (or) b) Explain First Normal Form in detail. 1 13. a) Draw and explain the structure of a B+ tree. (or) b) Write short notes on the different types of Files in file organization. 14. a) Explain Query Evaluation plan in detail. (or) b) Discuss about Nested and Block Nested Loop join operations in query processing. 15. a) Explain Lock based Protocol in detail. (or) b) Explain Shadow paging in detail. PART – C Answer any TWO questions (2 x 20 =40 ) (Q.No. 16 is Compulsory) 16. a) List out components of E-R diagram and discuss the concept of Entity Relationship diagram with an example. b) Discuss in detail about BCNF. 17 a) Discuss the different levels of RAID. b) Explain the Evaluation of expression in query processing. 18. Discuss in detail about prevention and handling of Dead lock. ************* 2