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You are here:Open notes-->VTU-->DATABASE-APPLICATIONS-LABORATORY-10CSL57

DATABASE APPLICATIONS LABORATORY [10CSL57]

How to study this subject

Subject Code: 10CSL57
Hours/Week : 03
Total Hours : 42
I.A. Marks : 25
Exam Hours: 03
Exam Marks: 50
1. Consider the following relations:
Student (snum: integer, sname: string, major: string, level: string, age: integer)
Class (name: string, meets at: string, room: string, d: integer)
Enrolled (snum: integer, cname: string)
Faculty (fid: integer, fname: string, deptid: integer)
The meaning of these relations is straightforward; for example,
Enrolled has one record per student-class pair such that the studen is enrolled in the class. Level is a two character code with 4 different values (example: Junior: JR etc)
Write the following queries in SQL. No duplicates should be printed
in any of the answers.
i. Find the names of all Juniors (level = JR) who are enrolled
in a class taught by Prof. Harshith
ii. Find the names of all classes that either meet in room R128
or have five or more Students enrolled.
iii. Find the names of all students who are enrolled in two
classes that meet at the same time.
iv. Find the names of faculty members who teach in every
room in which some class is taught.
v. Find the names of faculty members for whom the combined
enrollment of the courses that they teach is less than five.
2. The following relations keep track of airline flight information:
Flights (no: integer, from: string, to: string, distance: integer,
Departs: time, arrives: time, price: real)
Aircraft (aid: integer, aname: string, cruisingrange: integer)
Certified (eid: integer, aid: integer)
Employees (eid: integer, ename: string, salary: integer)
Note that the Employees relation describes pilots and other kinds of
employees as well;
Every pilot is certified for some aircraft,
and only pilots are certified to fly.
Write each of the following queries in SQL.
Find the names of aircraft such that all pilots certified to
operate them have salaries more than Rs.80, 000.
For each pilot who is certified for more than three aircrafts,
find the eid and the maximum cruisingrange of the aircraft
for which she or he is certified.
Find the names of pilots whose salary is less than the price
of the cheapest route from Bengaluru to Frankfurt.
For all aircraft with cruisingrange over 1000 Kms, .find the
name of the aircraft and the average salary of all pilots
certified for this aircraft.
Find the names of pilots certified for some Boeing aircraft.
Find the aids of all aircraft that can be used on routes from
Bengaluru to New Delhi.
3. Consider the following database of student enrollment in courses books adopted for each course.
STUDENT (regno: string, name: string, major: string, bdate:date)
COURSE (course #:int, cname:string, dept:string)
ENROLL ( regno:string, course#:int, sem:int, marks:int)
BOOK _ ADOPTION (course# :int, sem:int, book-ISBN:int)
TEXT
(book-ISBN:int,
book-title:string,
publisher:string,
author:string)
i. Create the above tables by properly specifying the primary keys and the foreign keys.
ii. Enter at least five tuples for each relation.
iii. Demonstrate how you add a new text book to the databas and make this book be adopted by some department.
iv. Produce a list of text books (include Course #, Book-ISBN Book-title) in the alphabetical order for courses offered b the ‘CS’ department that use more than two books.
v. List any department that has all its adopted books published by a specific publisher.
vi. Generate suitable reports.
vii. Create suitable front end for querying and displaying the results.
4. The following tables are maintained by a book dealer.
AUTHOR (author-id:int, name:string, city:string, country:string)
PUBLISHER
(publisher-id:int,
name:string,
city:string,
country:string)
CATALOG (book-id:int, title:string, author-id:int, publisher-id:int,
category-id:int, year:int, price:int)
CATEGORY (category-id:int, description:string)
ORDER-DETAILS (order-no:int, book-id:int, quantity:int)
i. Create the above tables by properly specifying the primary keys and the foreign keys.
ii. Enter at least five tuples for each relation.
iii. Give the details of the authors who have 2 or more books i the catalog and the price of the books is greater than the average price of the books in the catalog and the year of
publication is after 2000.
iv. Find the author of the book which has maximum sales.
v. Demonstrate how you increase the price of books publishe by a specific publisher by 10%.
vi. Generate suitable reports.
vii. Create suitable front end for querying and displaying the results.
5. Consider the following database for a banking enterprise
BRANCH(branch-name:string, branch-city:string, assets:real)
ACCOUNT(accno:int, branch-name:string, balance:real)
DEPOSITOR(customer-name:string, accno:int)
CUSTOMER(customer-name:string,
customer-street:string,
customer-city:string)
LOAN(loan-number:int, branch-name:string, amount:real)
BORROWER(customer-name:string, loan-number:int)
i. Create the above tables by properly specifying the primary
keys and the foreign keys
ii. Enter at least five tuples for each relation
iii. Find all the customers who have at least two accounts at the
Main branch.
iv. Find all the customers who have an account at all the
branches located in a specific city.
v. Demonstrate how you delete all account tuples at every
branch located in a specific city.
vi. Generate suitable reports.
vii. Create suitable front end for querying and displaying the
results.
Instructions:
1. The exercises are to be solved in an RDBMS environment like
Oracle or DB2.
2. Suitable tuples have to be entered so that queries are executed
correctly.
3. Front end may be created using either VB or VAJ or any other
similar tool.
4. The student need not create the front end in the examination.
The results of the queries may be displayed directly.
Relevant queries other than the ones listed along with the
exercises may also be asked in the examination.
Questions must be asked based on lots.

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