Gujarat Technological University 2010-3rd Sem Diploma Business Management (D.B.M.) ,Computer Engineering,, DBMS - Question Paper
GUJARAT TECHNOLOGICAL UNIVERSITY
B.E. Sem-III Regular / Remedial Examination December 2010
Seat No. Enrolment No.
Subject code: 130703 Subject Name: Database Management System
Date: 16 /12 /2010 Time: 10.30 am - 01.00 pm
Total Marks: 70
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) What is data independence ? Explain the difference between physical and logical 05 data independence with example.
(c) What are the responsibilities of a DBA ? 04
Q.2 (a) Explain following Term with suitable example 06
(1) Primary Key (2) Candidate Key (3) Super Key (4) On delete cascade
(b) Write down the query for the following table where primary keys are underlined. 08 Person(ss#, name, address)
Car(license, year, model)
Accident(date, driver, damage-amount)
Owns(ss#, license)
Log(license, date, driver)
(1) find the total number of people whose cars were involved in accidents in 2009.
(2) Find the number of accidents in which the cars belonging to S.Sudarshan
(3) Add a new customer to the database.
(4) Add a new accident recorded for the Santro belonging to KORTH
OR
(b) Consider the employee data. Give an expression in SQL for the following query : 08 Employee(employee-name, street,city)
Works(employee-name, company-name,salary)
Company(company-name, city)
Manages(employee-name, manager-name)
(1) find the name of all employees who work for State Bank.
(2) Find the names and cities of residence of all employees who work for State Bank.
(3) Find all employee in the database who do not work for State Bank.
(4) Find all employee in the database who earn more than every employee of UCO Bank.
Q.3 (a) Draw E - R Diagram for the School Management System. 07
OR
Q.3 (a) Draw E - R Diagram for Library Management System. 07
(b) Consider a relation R with five attribute A,B,C,D,E having following dependencies 07 : A -B, BCE and EDA
a)List all Keys for R
b) In which normal form table is, justify your answer.
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Q.4 |
(a) |
What is join ? Explain various type of joins with example |
07 |
|
(b) |
Write Note on Cursor and its types OR |
07 | |
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Q.4 |
(a) |
What is deadlock ? When it is occurs and how to avoid it ? |
07 |
|
(b) |
Explain Trigger with example. |
07 | |
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Q.5 |
(a) |
Explain Strict two phase locking with its advantage and disadvantages. |
07 |
|
(b) |
Explain DDL,DML,DCL |
05 | |
|
(c) |
Define Discretionary access control OR |
02 | |
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Q.5 |
(a) |
Explain linear search and binary search algorithm for selection operation. |
07 |
|
(b) |
Write with example various built in string functions. |
05 | |
|
(c) |
Describe Data Encryption. |
02 |
2
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Attachment: |
| Earning: Approval pending. |
