What is meant by Functional Requirement?

What is meant by Functional Requirement?

Functional Requirement : Functional requirements define the expected behavior of a software system. They specify what the system should do, focusing on the functionalities and features that a system must support. Functional requirements are used by software developers, testers, and other stakeholders to understand the system’s desired behavior and to determine whether the system meets its intended purpose once it’s developed.

What is meant by Functional Requirement?
What is meant by Functional Requirement?

Functional requirements can be described in various forms, such as:

  1. Use Cases: Detailed descriptions of how users interact with the system to achieve specific goals.

  2. User Stories: Short, simple descriptions of a feature told from the perspective of the person who desires the capability, usually a user or customer of the system.

  3. System Specifications: Detailed descriptions of system functionalities, often written in a structured format.

  4. Functional Specification Documents (FSD): Comprehensive documents that outline the system’s functionalities in detail.

  5. Lists or Tables: Breakdowns of features or capabilities the system must possess.

Examples of functional requirement might include:

  • A user must be able to register an account.
  • The system must generate monthly reports.
  • Users should be able to reset their password.
  • The software must be able to process a credit card payment.

It’s essential to differentiate functional requirements from non-functional requirements. While functional requirements describe what a system is supposed to accomplish, non-functional requirements address how the system achieves those functions in terms of performance, security, usability, etc. For example, “The system must process 1000 transactions per second” or “The system should have 99.99% uptime” are non-functional requirements.

Related Articles :

  1. Difference between functional and non functional requirements
  2. What are functional and non functional requirements ?
  3. Functional Requirements: Best Practices for Writing Functional Requirements
  4. Functional and Nonfunctional Requirements: Specification …


What is meant by functional requirement?

Functional requirements are product features or functions that developers must implement to enable users to accomplish their tasks. So, it’s important to make them clear both for the development team and the stakeholders. Generally, functional requirements describe system behavior under specific conditions

What are functional requirements with example?

What are functional requirements with example?

Functional requirements are made up of two parts: function and behavior. The function is what the system does (e.g., “calculate sales tax”). The behavior is how the system does it (e.g., “The system shall calculate the sales tax by multiplying the purchase price by the tax rate.”).

What is functional and non functional requirement?

A functional requirement defines a system or its component. A non-functional requirement defines the quality attribute of a software system. It specifies “What should the software system do?” It places constraints on “How should the software system fulfill the functional requirements?”

What does functional requirements mean in project management?

Functional requirements are capabilities that the product must do to satisfy specific user needs. They are the most fundamental requirements. Functional requirements are sometimes referred to as business requirements.

What are the three functional requirements?

6 functional requirements

  • Business requirements. A common functional requirement involves the requirements that a company needs to operate. …
  • Administrative protocols. …
  • User preferences. …
  • System requirements. …
  • Authentication. …
  • Legal requirements. …
  • Usability. …
  • Reliability.

What is functional vs requirement?

Business requirements define “what” needs to be done (goal) and “why” it is important. Functional requirements define “how” the system/person/process needs to behave in order to achieve the goal. Requirements can be divided in multiple categories depending on their source, attributes, or execution process.

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Author: Pallavi

Business Analyst , Functional Consultant, Provide Training on Business Analysis and SDLC Methodologies.

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