A requirement is a statement that precisely defines a condition or capability needed in a system or product. Requirement life cycle management (RLCM) is the process that must be followed to ensure that requirements are being implemented correctly. This helps to avoid miscommunication and misunderstanding with the client, as well as ensure that the work is done correctly. In this article, we are going to discuss the following points:
- What is Requirement Life Cycle Management (RLCM)?
- Importance of Requirement Life Cycle Management
- Requirement Life Cycle Stages
- Requirement Gathering Techniques
What is Requirement Life Cycle Management (RLCM)?
Requirement life cycle management is the process of creating, maintaining, and evolving the requirements artifacts throughout the life cycle of a system or project. Requirements management can be a critical aspect of any software development project. It is an essential step that helps assure that the final product is what the customer or user wants. In other words, requirements management is about being able to see the big picture for a project and keeping it on track.
Requirement engineering life cycle defines a set of activities, roles, and artifacts that together form a structured process for defining, developing, and documenting software requirements. The requirement lifecycle provides an outline of the steps needed to perform each activity.
Requirement Life Cycle Stages
The tasks and activities that are involved in requirement life cycle stages making sure you have everything needed from the client, creating and/or revising documents that state what you need from them, communicating with them about their feedback and expectations, determining project scope, and keeping it relevant, performing due diligence on their needs, and even making sure they are paying attention to changes when they occur. Following are the requirement life cycle stages:
Stage 1: Requirement Definition
Requirement Definition is the first step of the requirement life cycle. Requirement Definition is about identifying all the stuff that you need to be able to do in order to fulfill the purpose of your project. It is more than just writing a list of things that you think are cool like it is with a feature list. The goal of Requirement Definition is always to create something that works correctly and satisfies the purpose.
Stage 2: Requirement Validation
Requirement validation is the process of validating user requirements to assess whether they are acceptable, feasible, and verifiable. This is part of the requirements management process where the Business Analyst works with various experts to verify and confirm that their requirements make sense and can be developed within anticipated constraints.
Requirement Validation can be performed at any stage in the lifecycle of a system, application, or project. It is most useful for pre-funding, during development, and post-deployment.
Stage 3: Requirement Documentation
Requirement documentation is a document that describes all the requirements of a system. These documents help developers to understand what needs to be developed before they can start on the actual implementation of a software system. These documents are important as they provide a framework for the development team to gain an understanding of what is required and how it should be implemented. They also act as a reference point for changes that may need to be made later on during the development process.”
The document should also be consistent in its use of language (e.g., “2” always means “two” and not “zero-point-two”). The document should avoid using compound descriptive nouns or strings of prepositional phrases (e.g., “electronic device attached to a terminal device”) because they can lead to ambiguity or confusion.*
Stage 4: Requirement Management
Requirement Management is the process of reviewing, analyzing, and aligning requirements in an effective way. It is a vital part of the software development process. The requirements can be functional or nonfunctional, derived from user needs or business rules, or new features or bug fixes.
Requirement management is the process of managing and maintaining all the requirements of a software project, product, or service. Requirement management goes hand in hand with Software Requirements Management (SRM) and Business Requirements Management (BRM), they share most of the process and tools.
Requirement Gathering Techniques
There are many Requirement Gathering Techniques in software engineering. Most of them are described below:
- Brainstorming – Involves coming up with ideas, thoughts, or solutions to a problem with a group of people. Brainstorming is an excellent way to involve everyone in the process and to get input from those who may not normally contribute. This method may also help to generate additional research questions.
- One-on-one interview – An interview between one person and another, either face-to-face or online, usually conducted by a specialist or consultant. One on one interviews are generally used to get detailed information about certain aspects of requirements that need more specific answers.
- Focus Group Discussions – A group of individuals get together to discuss the project details.. They may have been sampled from a specific population or brought together especially for this purpose. The chairperson leads the meeting so that all issues are covered without dominating any individual. Focus groups are usually audio-recorded for later transcription and analysis.
- Observation – Observing people doing their work to understand how they work and what they do
- Questionnaires and Surveys – Questionnaires can be used to gather answers from a large number of people at once. Surveys are often used in conjunction with questionnaires.
- Tailoring – For something that is highly customized and unique to the client, focus on understanding the business, rather than the details of what they want.
- Prototyping – Create a prototype or use modeling tools to demonstrate how something might look or behave.