The first question that mid-sized companies have about BI data warehouse is about the costs involved and more importantly, the return on this investment, besides the benefits it assures.

A data warehouse is an electronic system for storing information in a manner that is secure, reliable, easy to retrieve, and easy to manage.

Although difficult, flawless data warehouse design is a must for a successful BI system. Avoid these six mistakes to make your data ware house perfect.