virtual data mart

What is the concept of a virtual data mart?

Beats me. Which vendor is using the term?

One would assume 'virtual' indicates it is not a materialized physical implementation but rather a logical view that is made functional through some software layer, which could simply be database views over a schema to make it look like a dimensional mart or a metadata driven middleware implementation by said vendor.

Hmm, maybe time to start the kimball forum glossary!