Investigation technique is the process of probing a stake holder in order to gather as much information as possible.
Let’s look into few popular investigation techniques followed:
- Document Analysis
- Reverse engineering
- Focus groups
Brain storming is a creativity technique performed by a group of people to find or derive a solution for a specific problem by gathering a list of ideas contributed by the participating group members.
Document analysis is qualitative research done on the existing document to frame a meaningful inputs for the new system requirements.
Reverse engineering is also called as back engineering. It is a process of examining and extracting information from the existing system to build or enhance the performance of the new system.
Observation is a investigation technique in which we decode the information based on our observation from the existing system and form inputs and outputs for the new system to be built.
Focus group is an interactive group assembled to discuss about a product or solution where they share their impressions, preferences, beliefs and attitude towards the product or solution.
Work shop is a structured and facilitated event of gathering stakeholders together to discover , refine , validate , prioritize and discuss requirements.
JAD (Joint Application Design):
Joint application design is a structured group of stakeholders and system analyst to gather requirements aiming at developing a solution.
It is a activity performed by BA where BA questions , captures, interprets and understands the intention of requirements requested by the client for building a specific solution.
In prototyping BA business analyst prepares models of the solution proposed through which stakeholders understand how the solution exactly looks which help them further provide much specified requirements.
Questionnaire is a popular technique used in gathering requirements where BA prepares a questionnaire and distribute it among the stakeholders from which he gathers the opinion, insights which helps a BA to gather requirements or information from multiple sources in stipulated time.