Question Bank - SOOAD

2 Marks Questions

1. How are entities from the ERD represented on a DFD? How are relationships from the ERD represented on a DFD?

2. Explain a black hole and a miracle. Out of the two figures given below identify which one is black hole and which one is a miracle.

3. Define a guard-condition in state machine diagram. Identify in the state machine diagram given below for which state transition the guard condition is not present. (A state machine diagram will be given you will have to identify where the guard condition is not mentioned)

4. Define a composite state in a state machine diagram. Describe its usage. Identify the composite state in the given diagram. (A state machine diagram will be given you will have to identify the composite state in it.)

5. Describe module coupling and module cohesion. Out of the following what is desirable for a good system:

a. loosely cohesive and highly coupled b. loosely coupled and highly cohesive

6. Why might an analyst describe a process with a decision table or tree instead of structured English?

7. Describe how each column of an event table is represented on a DFD (that is, what symbols are used?).

8. What is the purpose of a system sequence diagram? Match the symbols to their usage in the sequence diagram: (Here symbols will be given you have to match them to their usage)

9. Explain transform analysis. Describe the term central transform. In the diagram given below find in which part of the diagram transform analysis is carried out and in which part is the transaction analysis carried out. (A diagram would be given to identify)

5 Marks Questions

1. What DFD characteristics does an analyst examine when evaluating DFD quality?

2. Design use case diagram for course registration system and write the use case specification for any two use cases.

3. Design sequence diagram for the login procedure to a system. Include all possible scenarios and also draw activity diagram for it.

4. Design the use case diagram of a course registration system and explain includes, extends and generalize relation between the use cases.

5. Explain event partitioned DFD, physical DFD, and logical DFD. What features may be present on a physical DFD that should never be present on a logical DFD?

6. Design the System Flowchart for the Railway Reservation System. Explain it in detail.