In the latest version of IDD, data is organized around business entities. A business entity can be anything that has significance to an organization. For example, your organization might define a business entity type of Person. The customer John Smith is a business entity of type Person. In the MDM Hub Store, a business entity corresponds to a record in a base object table.

The following table describes some of the differences between the versions of IDD, depending on whether you use subject areas or you use business entities.