What Is a Data Mart?
A data mart is a repository of data gathered from operational data or other sources that is designed to serve a particular department or functional group. Does it sound like a warehouse? Yes, but you can think of a mart as being less generic than the typical warehouse. The emphasis of a data mart is on meeting the specific demands of a particular group of knowledge users in terms of analysis, content, presentation, and ease-of-use. The information is stored in the data mart in a format familiar to the users.
A common approach to using data marts is to keep data at a detail level in the data warehouse and summarize this information into the data mart for each functional group or department. Another design method includes building ...
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