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Lab 3
UML Exercise - Sample Solution
Peer-Olaf Siebers
</> Task
Produce the following for the new "Student-Internship Match" application:
– Use-case diagram for the described application
– Complete use case specification for a non trivial use case (e.g. "search for jobs")
– Activity diagram of the same use case
– Sequence diagram of the same use case
– Class diagram
Classes including key attributes and operations o Relationships
Multiplicity indicators
– Non trivial state machine diagram for one of the classes
Following are some diagrams that represent potential draft solutions to the task
COMP2013-Autumn 2018 2
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COMP2013-Autumn 2018 3
</> Sample Use Case Specification "Search Jobs" Use Case
Name: Search Jobs
Purpose: Search for suitable job for a student
Pre-condition(s): Student is logged in
Base case:
1. Student chooses "Search Jobs" option
2. Student chooses keywords that best describe the job (out of a given set of keywords)
3. Student clicks "OK" to start query search
4. Database does query search
5. Database sends query results
6. Student receives query results (one or more matching jobs)
Post condition(s): One or more jobs have been found and propagated to the student
Alternative path
– If in step 4 student does not receive a matching result for their job query they will be asked to change the
chosen keywords and sent back to Step 2
– If there are no job offers in the database there will be a message displayed after step 1 and the application
will return to the main window
COMP2013-Autumn 2018 4
</> Sample Activity Diagram for "Search Jobs" Use Case
COMP2013-Autumn 2018 5
</> Sample Sequence diagram for "Search Jobs" Use Case
COMP2013-Autumn 2018 6
</> Sample Class Diagramhttp://www.daixie0.com/contents/13/1967.html
COMP2013-Autumn 2018 7
</> Sample State Machine Diagram (for the database)
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