Post Assignment Feedback: Spring 2012_CS504_2
Introduction:
Post assignment feedback consists of the detail explanation of the common
problems faced by students while preparing the assignment solution. This will help
students in better understanding the solution of the assignment.
Feedback:
Assignment No.{2} Software Engineering (CS504) Marks: 20 Due Date: 26/04/2012
Assignment Solution: Uploaded in lms.
Common Mistakes &
Explanation:
Mistake 1: Incorrect UML notations used in both the diagrams.
Explanation: Always use proper UML notations to represent different
components of a diagram. For example, if you are developing a Use Case
Model then always use ovals to represent use cases.
Mistake 2: Incorrect Use Cases included in the Use Case Model.
Explanation: It was found that most of the students did not have the idea of
how to identify use cases and then add in the diagram. Most of the students
used ambiguous names for the use cases. Each use case name must be self-
explanatory and it should explain the purpose which the use case serves in the
diagram.
Mistake 3: Illegal data flows were included in DFD.
Explanation: While drawing Data Flow Diagram, most students added a
direct data flow connection between External Agent and Data Store which is
illegal as explained in the handouts and lectures. Similarly, direct data flow
between two external agents is also illegal and same practice was repeated by
numerous students which should be avoided.
Always take special care of rules for drawing the Data Flow Diagram.
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