PESIT Bangalore South Campus

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1 INTERNAL ASSESSMENT TEST 2 Date : 04//17 Max Marks : 50 Subject & Code : Object oriented Modeling & Design (CS71) Section : A and B Name of faculty : Mrs Sumana Sinha Time : 11:30-1:00 pm wer any five full questions Question 1 Prepare an use case diagram of computer system and explain the relevance of each Actor with corresponding uses case. Marks The diagram assumes that mail is moved from the server to the system as the user reads it. If mail is kept on the server, then the server would also be involved in the manage and maintain address list use cases. a. Some actors are: User. A person who is the focus of services. Server. A computer that communicates with the system and is the intermediate source and destination of messages. Virus checker. Software that protects against damage by a malicious user b. Some use cases are: Get . Retrieve from the server and display it for the user. Send . Take a message that was composed by the user and send it to the server.

2 Manage . Perform tasks such as deleting , managing folders, and moving between folders. Set options. Do miscellaneous things to tailor preferences to the user s liking. Maintain address list. Keep a list of addresses that are important to the user. 2 Write down the scenario of online stock broker and draw the sequence diagram for the same? 5&5 3a Explain with suitable example the following i> Include relationship ii> Extend relationship iii> Swim lanes 6 Include relationship. : The include relationship incorporates one use case within the behavior sequence of another use case.

3 Extend relationship: It adds incremental behavior to a use case and extension adds itself to the base rather than the base explicitly incorporating the extension. Swimlanes: 3b What are transient object explain with an example? 4 4 For an ATM system, analyze the different type of use cases by designing the use case diagram.

4 5 Write down the steps for choosing a software control strategy? Procedure control Event driven contro1 Concurrent Control Internal control Other Paradigm 6 Explain the application state model of ATM system. Application state model focuses on application classes and augments the domain state model. Determine application classes with states. Find events Build state diagram Check against other state diagrams Check against other state model Check against the interaction model 7 Write down the steps for reuse plan? Libraries Frameworks Patterns 8 Batch transformation Continuous transformation Batch transformation Performs the sequential computation. The application receives the input and aim is to compute an answer. The class model is important as there are various class models for

5 input, output and intervening stages The most important aim for batch transformation is to define a series of steps. Consider the following example Continuous transformation In this system the output actively depend on changing input and continuous transformation updates the output frequently Due to time constraint, the entire output cannot be recomputed, so it computes incrementally. Class, state model have similar purpose as with the batch transformation. One way to implement continuous transformation is with Pipeline function. Pipeline propagates the effect of each input stages and intermediate objects can be defined to improve the performance of pipeline * * * * * *.