U.S.N.
B.M.S. College of Engineering, Bengaluru-560019
Autonomous Institute Affiliated to VTU
January / February 2025 Semester End Main Examinations
Programme: B.E. Semester: V
Branch: Computer Science and Engineering Duration: 3 hrs.
Course Code: 23CS5PCOOM Max Marks: 100
Course: Object Oriented Modelling
Instructions: 1. Answer any FIVE full questions, choosing one full question from each unit.
2. Missing data, if any, may be suitably assumed.
UNIT - I CO PO Marks
Important Note: Completing your answers, compulsorily draw diagonal cross lines on the remaining blank
1 a) Illustrate the restructuring technique used to deal the multiple CO1 PO1 10
inheritance issue with relevant examples.
b) A library lends books and magazines to members, who are CO 3 PO 3 10
registered in the system. Also it handles the purchase of new titles
for the library. Popular titles are bought in multiple copies. Old
books and magazines are removed when they are out of date or in
pages. Revealing of identification, appeal to evaluator will be treated as malpractice.
poor condition. A member can reserve a book or magazine that is
not currently available in the library, so that when it is returned or
purchased by the library, the person is notified. The library can
easily create, replace and delete informations about the titles,
members loans and reservations in the system.
Create a Class Diagram for the above problem definition. Give the
explanation for your design.
OR
2 a) I] Analyze and identify a list of models that you would expect each CO2 PO2 10
of the following system to handle:
i) A catalog store order enter system.
ii) A Speed fast courier system.
iii) A ticketing system in metro rail service.
iv) A voice mail system with delivery options, message
forwarding and group lists.
II]Analyze the following relationships into generalization,
aggregation, association and n-ary associations. Explain your
answers.
i) A drawing object is text, a geometrical object, or a
group.
ii) A person uses a computer language on a project.
iii) Modems and keyboards are input/output devices.
iv) A route connects two cities.
v) A file contains records.
vi) A polygon is composed of an ordered set of points.
b) Prepare a class diagram for each group of classes mentioned CO3 PO3 10
below. Add at least 10 relationships (association and
generalizations) to the diagram. Use association names and
association end names where needed. Also use qualified
associations and show multiplicity. Write attributes and methods
for the classes.
file system, file, ASCII file, binary file, directory file, Disc,
drive, track, sector
UNIT - II
3 a) Illustrate with example the different types of events in state CO1 PO1 10
modeling.
b) Design an advanced State diagram for Telephone line system with CO3 PO3 10
activities.
OR
4 a) Define Concurrency. Illustrate any two ways of handling CO2 PO2 10
concurrency in state modeling with an example for each.
b) Design an advanced State diagram for Bank ATM system. CO 3 PO 3 10
UNIT - III
5 a) Consider a physical bookstore, such as in a shopping mall. CO 3 PO 3 10
a. List at least 3 actors that are involved in the design of
checkout system. Explain the relevance of each actor.
b. Identify the use cases. Summarize the purpose of each
use case with a sentence.
c. Prepare a use case diagram for a physical bookstore
checkout system.
d. Prepare a normal and exception scenario for any two use
cases that you have identified.
e. Prepare a sequence diagram corresponding to each
scenario
b) Differentiate between Passive objects and Transient Objects with CO 2 PO 2 10
the help of an example and neat diagram.
OR
6 a) A customer decides to upgrade her PC and purchase a DVD CO 3 PO 3 10
player. She begins by calling the sales department of the PC
vender and they tell her to talk to customer support and they put
her on hold while talking to engineering. Finally, customer support
tells the customer about several supported DVD options. The
customer chooses the DVD and is shipped by the mail department.
The customer receives a DVD, installs it satisfactorily and then
mails her payment to accounting.
Construct an activity diagram for this process. Use swim-lanes to
show various interactions.
b) Explain the Use Case Relationships with example for each. CO 1 PO 1 10
UNIT - IV
7 a) Consider the following Problem statement (given below) for CO 3 PO 3 10
ATM System:
“Design the software to support a computerized banking
network including both human cashiers and automatic teller
machines (ATMs) to be shared by a consortium of banks. Each
bank provides its own computer to maintain its own accounts
and process transactions against them. Cashier stations are
owned by individual banks and communicate directly with their
own bank’s computers. Human cashiers enter account and
transaction data.
Automatic teller machines communicate with a central computer
that clears transactions with the appropriate banks. An automatic
teller machine accepts a cash card, interacts with the user,
communicates with the central system to carry out the
transaction, dispenses cash, and prints receipts. The system
requires appropriate recordkeeping and security provisions. The
system must handle concurrent accesses to the same account
correctly.
The banks will provide their own software for their own
computers; you are to design the software for the ATMs and the
network. The cost of the shared system will be apportioned to
the banks according to the number of customers with cash
cards.”
i) What criteria would you take into consideration to find
relevant classes?
ii) Analyze with an example how to select the good classes from
the set of ATM classes that are identified from the knowledge of
problem domain.
b) Discuss the steps involved in constructing Application Interaction CO 1 PO 1 10
Model for ATM System and illustrate with example for each.
OR
8 a) Discuss the steps involved in constructing Application State CO 1 PO 1 10
Model for ATM System and illustrate with example for each.
b) Discuss the steps involved in constructing Domain State Model CO 1 PO 1 10
for ATM System and illustrate with example for each.
UNIT - V
9 a) Define a pattern and illustrate the properties of pattern. CO 1 PO 1 10
b) Most of today’s software system runs on distributed systems. CO 2 PO 2 10
These distributed systems needs a means of communication.
Explain how Forwarder-Receiver model addresses this issue.
OR
10 a) Explain in detail the different categories of patterns. Develop a CO 1 PO 1 10
pattern description template that helps in writing patterns.
b) Explain Publisher-Subscriber pattern in detail. CO 2 PO2 10
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