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Thursday, November 3, 2016

Database Management System, Question Paper of BCA (D) 4th Semester, Download Previous Years Question Paper 3







Roll no ……..
Total No. of Questions : 13]
PAPER ID A0217
BCA (Semester -4th)
DATABASE MANAGEMENT SYSTEM
BCA-402
Time :3 Hours
Instruction to Candidates:
1.     Section – A is compulsory.
2.     Attempt any Nine questions from section- B


Section –A

1.      
a.     What is database?
b.     Describe few disadvantages of databases.
c.      Define  data independence
d.     What is partial key?
e.      Differentiate referential integrity constraints and entity integrity constraints
f.       Describe the division operation in relation algebra.
g.     Describe the types of relational calculus.
h.     What Is multivalve dependency ?
i.       What is the need of normalization ?
j.       Describe DML statement in SQL
k.     What is the  difference between UNDO and REDO operation?
l.       What is database audit?
m.  Describe  in place updating and  dirty read in concurrency problems
n.     What is the difference between horizontal and vertical fragmentation  ?
o.     Describe WAL (write ahead logging ) protocol.


Section –B


2.     What is database administrator? Explain its responsibilities.
3.     Explain three level architecture of database.
4.     Compare network, hierarchical and relational models.
5.     Explain the naming conventions in design of E-Remodel.
6.     What is relational algebra? Explain different relation al algebra operations.
7.     Explain different constraints in SQL
8.     What is normalization ? explain first three normal forms.
9.     What are inference rules? How we can derive further rules using Armstrong rules.
10.                        What is database recovery? Explain immediate update and differed update techniques of recovery.
11.                        What is shadow paging ? explain its advantages and disadvantages
12.                        Explain the structure of distributed databases.

13.                        What is database security? Explain different security techniques,     

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