The requirement gathering part is partially done in problem analysis phase. The document created in first step would help you to get started in this page. This is tough phase and is very critical to the success of your data warehouse development. Clear requirement and thorough analysis is must for success of any data warehouse project.
1. Prepare the questionnaire for the future users of the new Data Warehouse and Business Intelligence Solution.
2. Ask very specific questions rather than high level.
3. Find out the Data Sources for the Data Warehouse data.
3. Check if you can use existing system if any as a data source for the Data Warehouse.
4. Find out the possible data to be inserted every day in the Data Warehouse.
5. Get a list of reports that is supposed to come out of the new data warehouse.
6. Understand the existing Business and terminologies.
7. Find out if client is ready for commercial BO tools or Open Source tools.
Requirement analysis and gathering is a bit tough as client might no be clear with his/her requirement. It’s your expertise in the design process and prior experience which help you to analyze the requirement and put it on paper. Once everything is clear make sure you get a sign off from the client on the requirement.
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