四川大学研究生软件项目管理课堂测试答案

ListtheproblemsyouexperiencedwhenyoucarriedoutarecentICT-relatedassignment.Trytoputtheseproblemsintosomeorderofmagnitude.Foreachproblemconsiderwhethertherewassomewayinwhichtheproblemcouldhavebeenreducedbybetterorganizationandplanningbyyourself.

Weplantoinvest5000$foraprojectandwishtoget12500$profitafterfiveyears.Supposethatthereis2500$profitforeveryyearandtheinterestrateis12%.PleasecomputetheNPVandDPBPfortheproject.

Year

Cash-flow

Discountfactor

Discountedcashflow

0

-5,000

1.0000

-5,000

1

2,500

0.8929

2,232

2

2,500

0.7972

1,993

3

2,500

0.7118

1,780

4

2,500

0.6355

1,589

5

2,500

0.5674

1,419

NPV

4013

DPBP(动态回收期）=3years

Aninvoicingsystemistohavethefollowingcomponents:amendinvoice,produceinvoice,producemonthlystatements,recordcashpayment,clearpaidinvoicesfromdatabase,createcustomerrecords,deletecustomer.

Whatphysicaldependenciesgoverntheorderinwhichthesetransactionsareimplemented?

1.Createcustomer2.Deletecustomer3.Produceinvoice

4.Amendinvoice5.Payment6.Clearpaidinvoices

7.Producemonthlystatements

Howcouldthesystembebrokendownintoincrementswhichwouldbeofsomevaluetotheusers(hint–thinkabouttheproblemsoftakingexistingdetailsontoadatabasewhenasystemisfirstimplemented).

increment1:Createcustomer,Deletecustomer

increment2:Produceinvoice,Amendinvoice

increment3:Payment,Clearpaidinvoices

increment4:Producemonthlystatements

Giventheprojectdatabelow:

project

inputs

outputs

entityaccesses

systemusers

programminglanguage

developerdays

1

210

420

40

10

x

30

2

469

1406

125

20

x

85

3

513

1283

76

18

y

108

4

660

2310

88

200

y

161

5

183

367

35

10

z

22

6

244

975

65

25

z

42

7

1600

3200

237

25

y

308

8

582

874

111

5

z

62

X

180

350

40

20

y

Y

484

1190

69

35

y

Whatitemsaresizedrivers?

inputs,outputs,entityaccesses(systemusersfor