L2: Investigating System Requirements * Flashcards

1
Q

What are the five key System Analysis activities?

A
  1. Gather detailed information about people involved
  2. Define requirements
  3. Prioritise requirements
  4. Develop user-interface dialogs
  5. Evaluate requirements with users
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2
Q

What are system requirements?

A

System requirements refer to the activities and characteristics that the system must have in order to meet the business need

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3
Q

What are functional requirements?

A

Functional requirements are the activities that the system must perform
e.g. any basic functionality required of the system

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4
Q

What are non-functional requirements?

A

Nonfunctional requirements are the characteristics of the system that are not required for basic functionality, but are part of the performance goals of the system.

“Nice to haves”

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5
Q

The different formats for writing requirements (3)

A
  1. Traditional format “The system shall perform this requirement”
  2. Unified process format - Written as a use case
  3. Agile method format - User story “As a <type> I want <some> for <some></some></some></type>
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6
Q

FURPS+ Requirements acronym stands for

A

Functional requirements
Usability requirements
Reliability requirements
Performance requirements
Security requirements
+ Other categories

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7
Q

What are stakeholders?

A

A stakeholder is a person who has an interest or commitment to the successful implementation of the system

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8
Q

The types of stakeholders (4)

A

Internal stakeholders - within the organisation
External stakeholders - outside the organisation
Operational stakeholders - who regularly interact with the system
Executive stakeholders - who dont directly interact with the system, but use information or have a financial interest

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9
Q

Who are the stakeholders that are both operational and executive INTERNAL stakeholders?

A

Operational managers - They are persons within the organisation who may directly interact with the system, and have a financial interest in the systems success.

They operate on an executive and operational level.

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10
Q

Who are the stakeholders that are both operational and executive EXTERNAL stakeholders?

A

External auditors - They are persons outside of the organisation who must work directly with the system to audit it, and have a financial interest in the systems success.

They also work operationally, but are on an executive level.

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11
Q

Information gathering techniques (6)

A

Interview, questionnaire, review, observation, research, collect comments

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12
Q

What is meant by a model?

A

A model is a representation of some aspect of the system being built

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13
Q

What are the reasons for modelling requirements? (4)

A

Reducing complexity, communicating with team members and other stakeholders, documentation, remembering details

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