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If I get new requirement from client which document I have to ask with client. How to start that requirement.
Plz reply me...
1) DataSources
2) Identifying Fact Tables
3) Identifying Dimension tables and their relation with Fact tables(Key fields) or get Data Dictionary
4) Identify the different dimensions like Dates, demographics etc.
5) Audience for Dashboards
6) Update Frequency
You may get a technical document consisting of the following->
Data sources used
Tables used
Linking associated
Finding key fields for linking
Any Specific requirements by client
Department using the report.
Users to be created for access.
Addition to what others rightly mentioned, KPIs need to be properly understood and clarified along with its business value, priority, stakeholders/users to be served, also need to understand the overall objective first. Use 5 W's and 1H (Why, What, Who, When, Where, How) formula to prepare/ask questions during or before requirement sessions.