System Design & Analysis

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MODULE 2MODULE 2

Requirement Analysis

Introduction:

Upon completion of Module 1 you should now have a high-level of

understanding about the role systems analysis and design plays in the

entire system development lifecycle, as well as the various tasks and

output from the system analysis and design phase in the life cycle.

Module 2 is the �rst of three Modules devoted to the analysis phase of

the system development life cycle.

Gathering, understanding, modelling and documenting requirements are

the precursor of subsequent system analysis and design activities. This

module begins with a discussion on various types and levels of

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requirements before discussing the characteristics of good requirements.

This will allow you to conduct a consistent categorisation for di�erent

types of requirements. For example, some requirement statements may

outline what behaviour the system should have. , i.e. what the system

shall do, whereas other requirement statements may describe how the

system should behave by including the requirements for the reliability of

the system. This module will also allow you to develop the ability to

identify requirements that do not meet the good requirements criteria.

For example, users’ expectation of the system may be vague, ambiguous

and not testable.

This module introduces you to the traditional methods for determining

requirements including: interviews with individuals, observations of

workers, and business document analysis. You will also learn some

modern methods for determining requirements, for example, Joint

Application Design (JAD), and Prototyping. By the end of this module, you

will develop the ability to make a decision as to what would be the most

appropriate method to use for a given system development project.

The second half this module is primarily focused on developing your

ability to module complex subject matters. You will learn the two most

commonly used approaches to describe user requirements – the use

case approach and user story approach. These two approaches are not

incompatible with each other. It is imply that di�erent system

development methodologies have a preference over one another. You

will also spend much time on learning a modelling language, Uni�ed

Modelling Language (UML). UML provides rich diagramming capacity to

model di�erent aspects of a system. For example, it uses case, process,

logical data model etc. You will learn the basic syntax and conventions of

UML, and the techniques for drawing user case diagram and writing use

case speci�cation.

How to identify actors in a system? Do all actors have to be humans? How

to describe their interactions with the system? You will be able to answer

all these questions by the end of this module. The learning

technique/style for this module is di�erent to those from the previous

module. In Module 1, you were required to read extensively in order to

develop an understanding of the core concepts in systems analysis and

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design. However, from Module 2 onwards, you will be not be required to

read as much, rather you will be asked to apply the modelling techniques

you learnt into problem solving.

This Module will cover:

Module 2.1 – Determining systems requirements

Module 2.2 – Developing use cases

This Module will help you achieve the following outcomes:

a) Identify, critically evaluate and recommend information systems solutions for ine�ciencies in business processes, procedures and work practices using data and process modelling techniques.

b) Formulate, validate and document business requirements for a medium-scale information system development project and e�ectively communicate these requirements to the stakeholders.

c) Demonstrate the ability to e�ectively analyse, design and develop information systems using Uni�ed Modelling Language (UML) models.

Time Management:

Your workload expectation is 20 hours for this module.

12 Week Delivery:

20 hours per module (two weeks): facilitated study: 3 hours / week. Personal Study: 7 hours / week.

3 hours facilitated study consists of attending class, responding to facilitator feedback.

You are to allocate 7 hours of personal learning. This includes essential time spent on pre-reading and viewing materials, assessment progression and learning activities.

Assessment Progression:

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Assessment 1 is due at the end of Module 3.1. Please refer to the

assessment briefs in the assessment area for more detail. Module 2

content is completely aligned with Assessment 1. It prepares you for the

various tasks in Assessment 1. Therefore, it is imperative that you

complete all learning activities in Module 2.1 and Module 2.2. They are

designed to allow you to practice similar tasks to those outlined in

Assessment 1.

Class Expectation:

You are expected to have worked through the essential learning resources and activities for this module before attending the facilitated session (face to face or online session) – this enables informed discussion and full participation in learning activities.

Participate in all scheduled facilitated sessions.

This time is intended to be used by you and your learning facilitator to work through activities and engage in discussion about the module content.

These sessions provide a space for you to raise questions about the module content and seek guidance on writing your assessments.

You will review, explore and discuss more deeply the information presented in the learning resources.