1. Lecture 6 – Requirement Analysis
System Requirements
Requirements Analysis Techniques
Software Project Management
Maria Petridou

2. University of Nottingham
3/31/2017
System Requirements
System Requirements are all of the capabilities that the new system must have.
From Planning Phase
The systems request produced in the planning phase lists the high-level business requirements of the proposed system.
Software Project Management
Maria Petridou
Maria Petridou

3. University of Nottingham
3/31/2017
System Requirements
Analysis Phase
The first step in the analysis phase is to develop an analysis strategy in order to define the system requirements.
The aim is to turn the precise business requirements into precise system requirements.
Software Project Management
Maria Petridou
Maria Petridou

4. University of Nottingham
3/31/2017
System Requirements
The purpose of defining requirements is to provide information for the next steps in the analysis phase (use cases, process model, data model, etc.) and to define the scope of the system.
The analysis phase involves:
1. Understanding current system
2. Identifying improvements
3. Define requirements for new system
Software Project Management
Maria Petridou
Maria Petridou

5. University of Nottingham
3/31/2017
System Requirements
Stakeholders and system analysts should work in co-operation in order to determine the system requirements.
Stakeholders – users, sponsors, technical staff.
An analysis strategy consists of requirements analysis techniques and information gathering techniques.
System requirements are divided in
Functional: Activities the system MUST perform.
( Information & Process)
Non-functional: Characteristics of the system other than activities
( Performance, Operational, Security, Cultural, Political)
Software Project Management
Maria Petridou
Maria Petridou

6. University of Nottingham
3/31/2017
System Requirements
Exercise 1:
Determine which in the following are functional requirements and which ones are non-functional requirements. (Dennis&Wixom, Ch.4).
Be accessible to web users
Include the company standard logo and colour scheme
Restrict access to profitability information
Provide management reports
Have 2-second maximum response time for predefined queries, and 10-minute maximum response time for ad-hoc queries.
Include sales information that is updated at least daily.
Print additional reports in other languages.
Include actual and budgeted cost information.
Software Project Management
Maria Petridou
Maria Petridou

7. Requirements Analysis Techniques
University of Nottingham
3/31/2017
Requirements Analysis Techniques
Main requirements analysis techniques are the following:
Business process automation (BPA)
The basic way in which the organisation operates is left unchanged and computer systems are used to automate some of the work. Focus on automate processes. No changes to organisation.
Business process improvement (BPI)
Moderate changes to the way in which the organisation operates in order to achieve improvements. Focus on improve processes. Moderate changes to organisation.
Business process re-engineering (BPR)
Uses new ideas and technology to make major changes to the way in which the organisation operates. Focus on innovation. Major changes to organisation.
Software Project Management
Maria Petridou
Maria Petridou

8. Requirements Analysis Techniques
University of Nottingham
3/31/2017
Requirements Analysis Techniques
Some other requirement analysis techniques are:
Software Project Management
Maria Petridou
Maria Petridou

9. Requirements Analysis Techniques
University of Nottingham
3/31/2017
Requirements Analysis Techniques
Software Project Management
Maria Petridou
Maria Petridou

10. Requirements Analysis Techniques
University of Nottingham
3/31/2017
Requirements Analysis Techniques
Software Project Management
Maria Petridou
Maria Petridou

11. Requirements Analysis Techniques
University of Nottingham
3/31/2017
Requirements Analysis Techniques
Each requirements analysis technique has different impact on the project:
Reading: (Dennis&Wixom, chapter 4).
Software Project Management
Maria Petridou
Maria Petridou