DOEACC Society 2007 Advanced Level Course In Computer Science A5-R3: STRUCTURED SYSTEM ANALYSIS

4.10 The structural or object model is represented in UML primarily with _______________ Diagrams.





















PART TWO
(Answer any 4 questions)

5.
a) What is the SDLC? Name every of the phases that make-up the SDLC and clearly indicate the sequence in which the phases must be performed.
b) List the activities necessary to complete the study phase of the project.
c) Name 3 modeling techniques that may be used in the definition phase of a system.
(8+4+3)

6.
a) The Video Rentals and Sales (VRS) company rents and sells videos to customers, and wants to computerize its operations. It wants the new system to do every thing the current system does, which is a follows:
• In the current system all customers must be registered in the customer file.
• New customers must give identification, name, address, telephone, etc., and is entered in their customer record in the customer file.
• Videos are rented and the rental is recorded in the rental file and a fee charges.
• Returned videos are checked-in and the rental file is updated.
• Customers who are late are contacted by telephone.
• All video sales are recorded.
• The system produces sales and rentals reports for management.
• All cash from rentals and sales is passed to the Accountant along with a daily Rentals/Sales Report.
• Customers are sent a Monthly Bonus Letter.
• Customers are sent an Annual Bonus Letter.
• VRS purchases all its videos from a Supplier and passes the invoices to the Accountant for payment.

Given the above information, draw a situation diagram.

b) Why should you develop both logical and physical DFDs for systems? What advantage is there for drawing a logical DFD before a physical DFD for the info system explained in Part a) above.
(9+6)

7.
a) What are CASE tools used for? What is the purpose of:
i) upper-CASE tools
ii) lower-CASE tools
b) Name techniques for validating system requirements.
c) What are the main principles used in designing forms for data entry?
(6+4+5)











8.
a) Describe the salient features of IIML? explain its use of dynamic modeling of a system.
b) The sales staff of a Jewelry Retailer is divided into commissioned salespersons and salaried salespersons. A commissioned sales person receives 7% commission on every sale greater than or equal to Rs.10, 000.00; receives 5% commission on every sale greater than or equal to Rs.1, 000.00 and less than Rs. 10, 000.00 and receives 2% commission on every sale less than Rs.1, 000.00. A salaried salesperson receives a Rs.700.00 bonus for cumulative sales greater than or equal to Rs.10, 000.00; receives a Rs.50.00 bonus for cumulative sales greater than or equal to Rs.1, 000.00 and less than Rs.1, 000.00, and receives no bonus for sales less than Rs. 1, 000.00

Earning:   Approval pending.