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What is Requirements Engineering? - (BCA / B.Tech)

Requirements Engineering in Hindi | What is Requirements Engineering?

Requirements Engineering is an important process in software development, in which the user's requirements are understood, defined, and documented. Its main objective is to ensure
that the software being developed can fully meet the user's requirements. It is a systematic process, through which the development of a high-quality software is possible by correctly analyzing the needs.

Requirements engineering is an extremely important process that is helpful in making correct and timely decisions in software development. This process is the basis of a well-defined, accurate, and effective software. Through this, the software is not only of high quality,
but also according to the user's requirements.

Introduction of Requirements Engineering in Hindi | Introduction to Requirements Engineering:

Requirements engineering is the initial and extremely important stage of the software development process. In this stage, the user's perspective, requirements, and expectations regarding the software are understood. Through this process, all those functions and features are collected that are necessary to be included in the software.

The main objectives of this process are as follows:

Understanding the user's expectations.
Analysis and definition of functional and non-functional requirements.
Ensuring the stability and completeness of the requirements.

Stages of Requirements Engineering in Hindi | Stages of Requirements Engineering:

Requirements engineering mainly consists of four main stages:

1. Requirements Elicitation

In this stage, requirements are collected from users, business managers, and other stakeholders. This stage is important because the user's expectations and requirements need to be understood correctly. Several techniques are used in this stage, such as:

Interviews: Taking direct interviews with users and stakeholders.
Surveys and Questionnaires: Understanding the requirements through various questions.
Observation: Watching how users work.
Workshops: Organizing workshops with stakeholders in a group.

2. Requirements Analysis and Modeling

In this stage, the collected requirements are analyzed to understand whether these requirements are feasible and whether it is possible to fulfill them. It is checked whether any requirement is vague or contradictory. In addition, the requirements are also modeled visually, so that they can be clarified. This modeling can be done in the following ways:

Use Case Diagram: This displays the functioning of the software from the user's perspective.
Data Flow Diagram: This helps in understanding the flow of data in the software.
Entity-Relationship Diagram: This shows the structure of the data present in the software.

3. Requirements Specification

Specification means that the requirements are written in the document correctly, clearly, and without any ambiguity. This document is called the Requirements Specification Document (Software Requirements Specification - SRS). This document is useful as a guide for the software development team and helps in making the development process smooth. The main points included in the SRS are:

Functional requirements: What functions the software should have.
Non-functional requirements: Expectations related to the performance, security, and user experience of the software.
System requirements: The hardware and software required to run the software.

4. Requirements Validation and Verification

This stage is for the validation and verification of the requirements, in which it is ensured that the requirements are accurate, complete, and practical. It includes the following actions:

Review: The requirements are presented for review so that there are no mistakes or ambiguities.
Prototyping: The requirements are confirmed by creating a temporary model.
Experiment and Testing: It is checked whether the requirements can be fulfilled in practice.

Types of Requirement Engineering in Hindi | Types of Requirements Engineering:

There are different types of requirements in requirements engineering:

Functional Requirements: These represent the features and functions that the software should perform. For example, in a banking application, there are functional requirements such as login, checking balance, and fund transfer.

Non-functional Requirements: These are related to the quality, performance, security, and user experience of the software. For example, the speed of the system, security level, and flexibility of the user interface.

Domain Requirements: These are specific to a particular domain. For example, following financial regulations in banking software, and following health standards in medical software.

Advantages of Requirements Engineering in Hindi | Benefits of Requirements Engineering:

There are many benefits of requirements engineering, which make it mandatory in software development:

Accuracy and Completeness: This process ensures that the requirements are fully understood and defined, which reduces the possibility of errors in software development.
Project Control: Due to clear requirements, it becomes easy to control and manage the project.
High Quality and User Satisfaction: When all the user's requirements are understood and included in the software, it is more satisfactory and of higher quality.
Less Cost and Time Savings: Due to well-defined requirements, there is no need for repeated changes in the project, which saves time and cost.

Challenges in Requirements Engineering in Hindi | Challenges in Requirements Engineering:

Requirements engineering is a complex process in which there are many challenges:

Vague user requirements: Many times, users themselves do not know what they actually want.
Priority setting: Setting the priority of all requirements is a difficult task.
Changing requirements: Requirements can change during the project, which requires redoing the work.
Disputes between stakeholders: Different stakeholders often have different expectations, which can sometimes be contradictory.

What is Requirements Engineering?

Requirements Engineering in Hindi | What is Requirements Engineering?

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