-
It is not a transactional data store.
MDM is used to produce transactional data but transactional data is not master data. Product master is in MDM, but Orders is NOT.
-
It is not a data warehouse.
MDM is likely to be used as a dimensional data in the warehouse / BI environment. MDM doesn't hold any facts.
-
It is not a metadata management.
MDM is about managing and storing metadata about the master data. It doesn't mean it is a central metadata repository.
-
It is not a taxonomy management.
Master data entities and hierarchies look very similar to taxonomies but we don't have tool to gather and manage taxonomies.