Requirements engineering and object-oriented analysis/ Software Engineering
Requirements engineering and Object-Oriented Analysis
Instructions
1. What to submit. Your assignment should be submitted in a single file and only that one file should be submitted. The name of the file should include your, for example: IdrakHesenou.zip. The file should consist of a single document either in Microsoft Word (.doc) or (.pdf)
file. Please observe the layout suggested in the sample submission below and make sure that your name appears clearly at the document.
o Charts and Diagrams can be drawn using any visual editor you prefer or consist of a scan of a handwritten drawing, although note
that Microsoft Visio is installed in the labs. Either way, the drawing should be pasted as an image inside the main document and NOT submitted as a separate document.
Functional requirements
Consider the following set of functional requirements:
Number Requirement
FR1 An intersection consists of a meeting of three or four roads.
FR2 Vehicle traffic may or may not be allowed in principle to flow from each road to
another.
FR3 If a flow of vehicle traffic from road A to road B is allowed in principle, a vehicle
traffic light should control the flow.
FR4 Each road may have up to one pedestrian traffic crossing.
FR5 At any point in time each pedestrian traffic light is in either one of the following
states: green or red.
FR6 At any point in time each vehicle traffic light is in either one of the following states:
green, amber, red or red-amber.
FR7 Each traffic light may receive only one of the following signals from the
intersection: Open or Close.
FR8
A vehicle traffic light that is red and received an Open signal should become redamber
and a second later green; if green and receives a Close signal then it should
change into amber and a second later to Red.
FR9
A pedestrian traffic light that is green and received a Close signal from the
intersection should change into red. If Red and received an Open signal it should
change to green.
Non-Functional requirements
Consider the following set of non-functional requirements:
Number Requirement
NR1 The system should be implemented in Java. (Please seek permission in advance if
you wish to use some other programming language.)
Questions
Question 1: Requirements specification
Decide on a sample intersection. Extend the above list of requirements to refine the
information given above and ensure that the requirements are complete, clear, precise,
consistent, and unambiguous. In particular, your revised list of requirements must answer the
following questions:
? How many roads intersect?
? Between which roads vehicle traffic is allowed in principle? (Your answer must be
realistic)
? Which roads are crossed by pedestrian traffic? (At least one)
Use precise terms adhering to the same vocabulary as the requirements sketched above.
Question 2: Use-case diagram
Perform use-case analysis and draw a use-case diagram that captures the results of a use-case
analysis of the requirements in the most accurate and complete way.
Use requirements numbers (FR1, FR2, …) to indicate which requirements are captured in full
by your diagram. If a requirement is only partially captured by your diagram, explain which
part of the requirement exactly. If your diagram imposes additional requirements that were
not listed earlier, explain what exactly are these requirements, why are they not part of your
list of requirements, and why would you like to impose these additional requirements.
Question 3: CRC cards
Use the Class-Responsibility-Collaborations technique to clarify the responsibilities and
collaborations between three classes in the object-oriented analysis of the problem above.
Question 4: Type diagram
Perform object-oriented analysis and draw a type diagram that captures to the most accurate
and complete way the requirements.
Use requirements numbers (FR1, FR2, …) to indicate which requirements are captured in full
by your diagram. If a requirement is only partially captured by your diagram, explain which
part of the requirement exactly. If your diagram imposes additional requirements that were
not listed earlier, explain what exactly are these requirements, why are they not part of your
list of requirements, and why would you like to impose these additional requirements.
Question 5: Interaction diagram
The word configuration stands for a list of all the traffic lights and the state of each i.e., red or
green or otherwise.
Describes in words (one paragraph) to the most accurate and complete way the sequence of
events in a scenario of changing configuration in the sample intersection you chose. Be
specific in describing-
? Which traffic lights are green, red or amber before the change
? Which traffic lights are green, red or amber after the change
? In which order lights change and how
Use either a collaboration or a sequence diagram to model the objects and messages involved
in this scenario in the most accurate and complete way. Clearly indicate the ordering of the
messages exchanged, the name and class of each object, and when each is created or
destroyed during this sequence of events (if at all) and when.
Use requirements numbers (FR1, FR2, …) to indicate which requirements are captured in full
by your interaction diagram. If a requirement is only partially captured by your diagram,
explain which part of the requirement exactly. If your diagram imposes additional
requirements that were not listed earlier, explain what exactly are these requirements, why
are they not part of your list of requirements, and why would you like to impose these
additional requirements.
Attachment:- software engineering.zip
