Chapter 15 Answers to Exercises
1a. Develop a use case diagram for a convenience food store. Include an actor representing the store
manager and use cases for orderItem(), stockItem() and sellItem().
orderItem()
stockItem()
store manager
sellItem()
b. Add more use cases to the diagram you created in Exercise 1a. Include two generalizations for
stockItem(): stockPerishable() and stockNonPerishable(). Also include an
extension to sellItem() to checkCredit() when a customer purchases items using a credit card.
orderItem()
stockPerishable()
stockItem()
stockNonPerishable()
store manager
sellItem()
checkCredit()
c. Add a customer actor to the use case diagram you created in Exercise 1b. Show that the customer
participates in sellItem() but not in orderItem() or stockItem().
2. Develop a use case diagram for a department store credit card system. Include at least two actors and
four use cases.
application()
cardTransaction()
store
processBill()
reconcileTransactions()
customer
3. Develop a use case diagram for a college registration system. Include at least three actors and five use
cases.
application()
createClasses()
registrar
assignClasses()
student
dropClasses()
billStudent()
instructor
4. Develop a class diagram for a Video class describing objects that a video store customer can rent.
Include at least four attributes and three methods.
Video
IdNum
Title
runningTime
rentalFee
create()
getInfo(idNum, title, runningTime,
rentalFee)
chargeFee()
5. Develop a class diagram for a Shape class. Include generalizations for child classes
Rectangle, Circle and Triangle.
Shape
numSides
create()
getInfo(numSides)
Rectangle
Circle
Triangle
widthSize
heightSize
diameter
side1Length
side2Length
side3Length
create()
getInfo(widthSize,
heightSize)
calcPerimeter()
calcArea()
create()
getInfo(diameter)
calcCircumference
()
calcArea()
create()
getInfo(side1Length,
side2Length,
side3Length)
calcArea()
6. Develop a class diagram for a BankLoan class. Include generalizations for child
classes Mortgage, CarLoan, and EducationLoan.
7. Develop a class diagram for a college registration system. Include at least three classes
that cooperate to achieve student registration.
Class
0..*
0..30
classId
instructorId
className
credits
Student
idNum
name
create()
getInfo(idNum)
schedule()
create()
getInfo()
0..180
0..*
0..6
1
Instructor
idNum
name
department
create()
getInfo(idNum)
schedule()
8. Develop a sequence diagram that shows how a clerk at a mail order company places a customer Order.
The Order accesses Inventory to check availability. Then the Order accesses Invoice to produce a
customer invoice which returns to the clerk.
Order
Inventory
clerk
getInfo(orderNum)
create(Order orderNum,
Inventory idNum}
(invenInfo)
getInfo(orderNum)
(invoiceInfo)
(invoice)
Invoice
9. Develop a statechart diagram that shows the states of a CollegeStudent from
PotentialApplicant to Graduate.
gradHighSchool()
Potential
applicant
apply()
Applicant
accept()
New student
register()
Current student
graduate()
Graduate
10. Develop a statechart diagram that shows the states of a Book from Concept to Publication.
generateConcept()
Concept
pitchToPublisher()
Contracted
write()
Awaiting
publication
publish()
Published
11. Develop an activity diagram that illustrates how to build a house.
createFloorPlan()
[Owner can serve as contractor]
hireIndividualWorkers()
[Owner cannot serve as contractor]
hireGeneralContractor
eBook()
buildHouse()
12. Develop an activity diagram that illustrates how to prepare dinner.
Student Answers will vary widely.
13. Develop the UML diagram of your choice that illustrates some aspect of your life.
Student Answers will vary widely.
14. Complete the following tasks:
a. Develop the UML diagram of your choice that best illustrates some aspect of a place you have
worked.
b. Develop a different UML diagram type that illustrates the same functions as the diagram you
created in Exercise 14a.
Student Answers will vary widely.