1、30.71181,78040.63551,58950.56741,419NPV4013DPBP(动态回收期)= 3 years3. An invoicing system is to have the following components: amend invoice, produce invoice, produce monthly statements, record cash payment, clear paid invoices from database, create customer records, delete customer. (a) What physical d
2、ependencies govern the order in which these transactions are implemented? 1. Create customer 2. Delete customer 3. Produce invoice 4. Amend invoice 5. Payment 6.Clear paid invoices 7. Produce monthly statements (b) How could the system be broken down into increments which would be of some value to t
3、he users (hint think about the problems of taking existing details onto a database when a system is first implemented). increment 1: Create customer, Delete customer increment 2: Produce invoice, Amend invoice increment 3: Payment, Clear paid invoices increment 4: Produce monthly statements 4. Given
4、 the project data below:projectinputsoutputsentity accessessystem usersprogramming languagedeveloper days2104204010x304691406125208551312837618y10866023108820016118336735z226244975652542716003200237308858287411162X180350Y484119069a) What items are size drivers?inputs, outputs, entity accesses (syste
5、m users for certain aspects) b) What items are productivity drivers?Programming language c) What are the productivity rates for programming languages x, y and z?x: 10 FPs/day y: 7 FPs/day z: 12 FPs/day (210x0.58+420x0.26+40x1.66)/30+(469x0.58+1406x0.26+125x1.66)/85/2d) What would be the estimated ef
6、fort for projects X and Y using a Mark II function point count? FP of Project X is 261.8 and FP of Project Y is 704.66. Using the productivity rate for programming language y, the estimate for Project X would be 262/7 i.e. 37 days, and for Project Y 705/7 i.e. 101 days.e) What would be the estimated
7、 effort for X and Y using an approximate analogy approach?Project X seems closest to Project 5 which provides an estimate of 22 days, and Project Y seems to be closest to Project 3 which gives an estimate of 108 days. 5. Activity Depends on Duration AB7 C6 D5 E10 F15 G8 HI4 J K E,FL I,H3 Create a PE
8、RT activity network using above data. Calculate the earliest and latest start and end dates and the float associated with each activity. From this identify the critical path. Answer:6. Using the activity times above:1.Calcaulate the expected duration and standard deviation for each activity2. Identi
9、fy the critical path3. Draw up an activity diagram applying critical chain principles for this project: Local the places where buffers will need to be located. Assess the size of the buffers Start all activities as later as possible.7. (1) Draw up an activity network for the activities below, identi
10、fying the critical path SA = Systems analyst; SD = Systems designer; SC = Software coder(2) How many of each type of resource will need to be recruited for the project as a whole if the earliest finish date is to be preserved?(Suppose each activity is carried out by only one staff)(3) What impact would there be on the project if there were only one systems designer?(4) What impact would there be on the project if there were only one systems designer and one coder?8. Answer:9.
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