Interview one person from a key business function, such as finance, human resources, or marketing. Concentrate your questions on the following items: How does he or she retrieve data needed to make business decisions? 

From what kind of system (personal database, enterprise system, or data warehouse) are the data retrieved? How often are these data accessed? Is this person satisfied with the data available for decision-making? If not, what are the main challenges in getting access to the right data?