Information Systems - key concepts

The following are key concepts in the subject of Information Systems:


* Intranet/ extranet
* IT project evaluation methods, notabley on Financial methods, e.g. NPV calculation; steps involved in IT evaluation
* Using pilot site in IT project; on pilot experiment
* Benefit-dependency network (pdf doc)
* "Invest first, analyze later" approach
* Project risks; project risk management
* Agile approach in IT/IS projects
* Software prototyping
* Time-boxing
*
JAD
* Project management, e.g. activity-on=node diagrams, critical path analysis
* Security concerns in IS development, e.g. data reliability and integrity, physical security.; security consideratins in SDLC
* IT outsourcing
* Business Process Re-engineering
* IT governance; IT governance



* Software design usability


Reference: IS subject syllabus

Related FB notes



Class exercise on Project Management:

ABC company has decided that it needs a new logistics system and that an off-the shelf package is the best solution. The main tasks have been identified and duration assessed as follows:

A Draw up a functional requirements specification 3 weeks
B Consider various relevant software packages and select one 3 weeks
C Identify and specify the necessary hardware and communications equipment 2 weeks
D Order the hardware 1 week
E Identify the key package modifications needed to meet the functionality required 2 weeks
F Modify the software package as necessary 8 weeks
G Accept delivery and install all hardware and equipment needed for the package 13 weeks
H Design a training plan 2 weeks
I Set up a testing plan 3 weeks
J Unit test all the amended package modules 4 weeks
K Train the endusers 2 weeks
L Full systems and acceptance testing 3 weeks
M Implement the new system 1 week

B cannot start until A is completed
C, E, H and I cannot start until B is completed
D cannot start until C is completed
F cannot start until E is completed
G cannot start until D is completed
J cannot start until F, and G are completed
K cannot start until H is completed
L cannot start until K is completed
M cannot start until L is completed

Draw an activity-on-node diagram for these 13 project tasks (A to M). Calculate and display on the diagram, with a node layout key, the earliest and latest start and finish times and float of each task.

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