Chapter 2 : Requirements Gathering & Analysis

What are Requirements?

• Constraints under which a software system must operate

• Description of services that a software system must provide

• How a software system needs to be implemented

Which of these requirement types this belong to?

Software must to user respond in 0.005sec

• Functional

• Non-functional

Which of these requirement types does this belong to?

Software must be compatible with Windows 10

• Functional

• Non-functional

Which of these requirement types does this belong to?

Software follow ISO-9000 standards

• Functional

• Non-functional

Which of these requirement types does this belong to?

Software be comply with the Personal Data Protection Act Law

• Functional

• Non-functional

Which of these requirement types does this belong to?

Software be enable users to process payments.

• Functional

• Non-functional

FUNCTIONAL requirements describe what the system should _____________

• BEHAVE

• DO

Product requirements are Non-functional requirements.

Which are examples of Product Requirements?

• Usability Requirements

  (How usable it must be)

• Privacy Requirements

  (User Data must be stored anonymously)

• Reliability Requirements

  (How often it must be available)

• Standard Requirements

  (Must follow a certain Industry Standard)

Organisational requirements are Non-functional requirements

Which are examples of Organisational Requirements?

• Ethical Requirements

  (Must adhere to an Ethical Standard)

• Safety Requirements

  (Must fulfil a specified Safety Standard)

• Standard Requirements

  (Must follow a certain Industry Standard)

• Delivery Requirements

  (Must follow a set schedule to complete)

External requirements are Non-functional requirements

Which are examples of External Requirements?

• Ethical Requirements

  (Must adhere to an Ethical Standard)

• Space Requirements

  (Must use a certain amount of harddisk space)

• Standard Requirements

  (Must follow a certain Industry Standard)

• Legislative Requirements

  (Must follow a set of Laws)