Modern Trend Towards Requirement Elicitation

Requirement Elicitation is one of the most important phases in SDLC during which all the requirements of 

users are elicited.

SDLC Process

Following are the techniques of requirement elicitation:-

• Conversational methods

        This is the verbal communication which takes place between stakeholders. Analysts and the experienced persons conduct different interviews, workshops to gather the requirements. Brain storming is also a conversational method by which requirements are elicited through the collection of ideas.

•  Observational method

           In this method the requirements are elicited by observing the peoples. Persons may be attached to the environment in order to elicit the requirements. Observations are made in such a way that it doesn't disturb the peoples and the staff members of the organization.

•  Analytical method

        In this method the analyst does the analysis of the gathered information. In this method we reuse the specification of the legacy systems to elicit the requirements. In this method requirements are also elicited through the questionnaires.

•  Synthetic method

        In this method we start the requirement elicitation from the documentation study. In this method we combine the conversational, observational and analytic methods to elicit the requirements. In this method the scenarios and storyboards are used to elicit the requirements. This method also include the JAD/RAD sessions, the purpose of including it in this method is to include all the stakeholders in the design phase. The analyst and stakeholders conduct contextual inquiry to elicit the requirements.

• GSD methodology

        In this methodology the advance problems are gathered and the strategy is made to lessen that problems.

•  Analysis of data

        Requirement elicitation I responsible for the success or failure of the project.JAD/RAD and ethnography has very much usage rate as compared to the R-group. Elicitation methods also depend on the development process.

•  Elicitation guidelines

1.          Interviews/Surveys are important for web based systems
2. 2       Checklists are important for the small scale systems   
3.          JAD/RAD is recommended when we have to deal a lot of peoples in less time and in less budget
4.          Scenarios/Storyboards are used for the legacy system updates
5.          Ethnography is used during the updating and we have a lot of time and budget.
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View Points

Many software houses have their own ways of developing. Due to this reason sometimes they fails because their own ways of developing are not sufficient sometimes to develop the modern software project. Engineers must use proper and adequate model and method for requirement elicitation and development for the user satisfactory.