Systems Analysis and Logical design

Systems Analysis and Logical design

PART-A

1. List any three classes of information systems.
2. Define environment of a system.
3. List the four skills needed by the successful systems analyst.
4. Define critical path.
5. In which phase of the system development life cycle does project planning typically occur ?
6. List any four feasibility factors.
7. Define discount rate.
8. Expand ROI.
9. List any three traditional methods of collecting systems requirements.
10. Define prototyping
11. List four different types of data flow diagrams used in the system development process.
12. List any three guidelines for drawing DFD'S
13. What does the term "limited entry" mean in a decision table.
14. Define trigger.
15. List out three types of logical models
16. Draw symbol for entity in E-R diagram.
17. Define actor in use-case modelling.
18. Draw the class diagram with association relationship "A university offers large number of courses ."
19. Match the following :
     a. Aggregation      1. Is a relation
     b. composition      2. A set of objects
     c. inheritance         3. Part of relation
20.List the four phases of RAD as defined by James Martin.
21.What is meant by scalability ?
22. Expand JAD.
23. List out the three characteristics of usability
24. List any four types of module coupling
25. Expand PERT.

PART-B

UNIT-I

2. Describe your college as a system. What is the input ? the output ? the boundary ? the components ? their interrelationships ? the constraints ? the purpose ? the interfaces ? the environment ? Draw a diagram of this system. 10m

3. A software project has been defined to contain the following list of activities along with their required times for completion : activity Time(weeks) Immediate

Predecessors
1.Collection of requirements 2 -
2.Analyze processes 3 1
3.Analyze Data 3 2
4.Design processes 7 2
5.Design data 5 3
6.Design screens 1 3,4
7.Design reports 5 4,5
8.Program 4 6,7
9.Test and document 8 7
10.Install 2 8,9

Draw a PERT chart for the activities.
Calculate the earliest completion time Show the critical path What would happen if activity 6 was revised to take 4 weeks instead of one week.

UNIT-11

4. List and describe the steps in the project initiation and planning process.

OR

5. compare collecting information by interview and by questionnaire.

Describe an hypothetical situation in which each of these methods would be an effective way to collect information system requirements.

UNIT-III

6. Starting with the context diagram, draw as many nested DFDs as you consider necessary to represent all the details of the employees hiring system described in the following:

Interspace company is an software development company with 500 employees. The company keeps records on all employees, their skills, projects assigned and departments worked in. New employees are hired by the personnel manager based on the data in the application form and evaluations collected from other managers who interview the job candidates. Prospective employees may apply at any time. Managers notify personnel manager when a job opens and list the characteristics necessary to be eligible for the job. The personnel manager compares the qualifications of the available pool of applicants with the characteristics of open job, then schedules interviews between the manager incharge of the open position and three best candidates from the pool. After receiving evaluations on each interview from the manager, the personnel manager makes the hiring decision based upon the evaluations and the applications of the candidates and the characteristics of the job, and the notify the interviews and the manager about the decision. Applications of rejected applicants are retained for one year, after which time the application is purged. When hired, a new employee completes a nondisclosure agreement, which filed with other information about the employee.

OR

7. Sushmita is trying to decide what graduate programs she will apply to. She wants to stay in South India, but if a program is considered one of the top 10 in the country, she is willing to move to another part of the country. Sushmita is interested in MBA, MIT and MIS programs. An MBA program must have atleast one well known faculty member and meet her location recruitment's before she will consider applying to it. Use a decision tree and decision table to represent this logic.

UNIT-IV

8. A cat rental company wants to develop an automated system that would handle car reservations, customer billing and car auctions. Usually a customer reserves a car, picks it up and then returns if after certain period of time. When car is returned, the customer receives a bill and pays the specified amount. In addition to renting out cars, every six months of so, the auto rental company auctions the cars that have accumulated over 20,000 miles. Draw a use-case diagrams for capturing the requirements of the system to be developed. Extend the diagram to capture corporate billing, where corporate customers are billed in the name of corporation and payments are made sometime later.

OR

9. Draw a class diagram, showing the relevant classes, attributes, operations and relationships for the following situation :

A hospital has a large number of registered physicians. Attributes of physician include physicianId(primary key) and speciality. Patients are admitted to the hospital by physicians. Attributes of patient include patientId(primary key) and patient Name. Any patient who is admitted must have exactly one admitted physician. A physician can admit any number of patients. Once admitted, a given patient must be treated by at least one physician. A particular physician may treat any number of patients. Whenever a patient is treated by a physician, the hospital wished to record the details of the treatment by including the date,time and the results of the treatment.

UNIT-V

10. Discuss the benefits, problems and general design process for the use of color when designing system output.

OR

11. Describe five methods of interacting with system.