pbl 1 ais new

8/3/2019 PBL 1 AIS NEW

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By:Tengku Ilani Bt. Tengku Azehan 2009587943

Asmaa Syahida Bt. Mohd Fadzil 2009701781Abdul Haffiz B. Abdul Razak 2009758159Nurul Farihan Bt. Ahmad Shabri 2009553969Muhammad Hafizzuddin B. Sulaiman 2008404374

AIS 630PROBLEM BASED

LEARNING 1



QUESTION 1

What is System Development Life Cycle (SDLC):

• SDLC is a problem-solving process used to organize the

large number of activities to build a system that used to

be determine whether to proceed from one task to the

next task in order, in which include a project specifies,

prototypes, designs, implements, reviews, tests and

perform its other activities.



PHASES IN THE SDLC



QUESTION 2

The aim of the preliminary investigation phases:

• To verify what problems occur or deficiency really exists,or to pass judgment on the new requirement.

• To identify & select a project for development fromamong all the projects under consideration that canundertake only those projects that are critical to itsmission, goals, and objectives.



• To answer the following questions:

What isthe

businessproblem?

Is it aproblem

or anopportunity?

What arethe majorcauses of

the problem?

Can the

problembe solved byimproving the

currentinformation

system?

Is a newinformation

Systemneeded?

Is this a feasibleinformation system

solution tothis problem?



What must be done during Preliminary InvestigationPhases?

• Must set the stage for gathering information about thecurrent problem and the existing information system.

• Use the information to study the feasibility of possibleinformation systems solutions.

• Consider the constraints of the problem solutions.

• Decide whether to further the decision or need to stop

the decision



QUESTION 3

Definition of feasibility:

Measurement of how suitable system development will be to

a company.

Type of Test to Evaluate Project’s Feasibility:

TechnicalFeasibility

OperationalFeasibility

Economic

Feasibility

ScheduleFeasibility



QUESTION 4

Prepares a good preliminary investigation report to be presented

to the vice president and the management about my findings.

Suggesting to the management to hold a special meeting to discuss about

my findings and the meeting will act as a medium for me

to present about my preliminary report.

Try to persuade the vice president and the committee to find a ways to

reducing the costs of the project so that it can still be develop.

Ask the committee to redesign the system so that it can be cost

justified.

Try to persuade the vice president to reject the system from being

developed and I would make new analysis about planning the

new system that hopefully could be cost justified.



Purpose of the Gantt chart:

Helps to ensure that the project schedule is maintained at areasonable pace, and that the individual tasks that make up the

work breakdown schedule logically progress in a manner thatmoves the project closer to completion.

To establish a precedence network that determines the prioritylevel of each task associated with the project.

Evaluates the dependency relationships of each of the tasks.

Advantages of preparing a Gantt chart:

• It provides an easy reference for how to carry out a givenproject by breaking it down into specific phases and tasks.



QUESTION 6

Factors that lead to project failures:

Poor Testing

Lack of UserInvolvement

Long orUnrealisticTime Scales

Shortage ofTrainedIT Professionals

No ChangeControlSystem

Shortage ofTeam Members

IneffectiveCommunication

Poor or

No Requirements



QUESTION 7

Techniques Advantages Disadvantages

Interviews •Get full range & depth ofinformation•Develops relationship & canbe flexible with client

•Time consuming•Can be costly

Review of Documents •Doesn't interrupt program or

client's routine•Information already existed

•Not flexible

•Could be biased

Observation •Can view as they areactually occurring.•Can adapt to events

•Difficult to interpret seenbehaviors•Complex to categorizeobservations



Technique Advantages Disadvantages

Questionnaires •Complete anonymously

•Easy to compare andanalyze

•May not complete the

survey•Lack of contact withrespondent

Joint Application Design •Quick & relatively easy toset up•Can provide useful

information

•Information is notrepresenting other group•Hard to analyze

Prototyping •Better able to explain theirrequirements•Show the system intendedto operate

•Potential cause of conflictbetween departments andthe end users

Case Studies •Fully depicts people’s

experience in program input,process, and results•Powerful way of portrayingprogram to outsiders.

•Time consuming

•Represents depth ofinformation rather thanwidth.



QUESTION 8

• Definition of Computer-aided software engineering

(CASE):

Methods for the development of information systems

together with automated tools that can be used in

the software development process.

• CASE technologies provide automated assistance for

software development by helping designers to focus on

the systems linear behaviour.



Advantages of Using CASE Tools:

• Improved productivity.

• Improved quality.

• Aids in managing the ripple effects.

• Better documentation.