What is a logical data mart and what makes this architecture unique?

What will be an ideal response?

A logical data mart is created by a relational view of a data warehouse. Some of the unique characteristics include:
1. Rather than having separate data marts, one can have several logical data marts which are only relational views of one physical data warehouse.
2. The data warehouse is used for cleansing and transformation rather than a separate staging area.
3. New data marts can be created quickly. There is no need to create a new physical database or write any loading routines.
4. The logical data mart is always up to date because it is a view of the warehouse. The data warehouse only needs to be updated, since views are populated when used.