talk to ten different CIOs, I get ten different descriptions of what data warehousing means in their unique situation. Do you mind if I ask: when you say data warehousing, what does that mean to you in the context of what you are trying to achieve?”
tip- to understand more, if the client says i need a solution, we should ask a question which would be can you explain what do you mean by dd solution and how it applies to what you are trying to achieve?

