In SAP Master Data Governance (MDG), entity types represent the core building blocks of the data model. They define the master data objects that can be managed within the MDG system. There are four main types of entity types in SAP MDG, each with distinct characteristics:
1. Type-1 Entity Type:
Represents the root objects that are subject to governance in MDG.
Can be created, changed, and deleted through change requests.
Examples of type-1 entity types include customers, materials, and vendors.
Storage and Use Type: 1
Changeable: Via change request
Generated Tables: Database tables
2. Type-2 Entity Type:
Used to qualify type-1 and type-4 entity types by adding additional key attributes.
Cannot be maintained directly in MDG, but their attributes can be used to filter and search for type-1 and type-4 entities.
Examples of type-2 entity types include plant and sales organization for a material.
Storage and Use Type: 2
Changeable: Not directly in MDG
Generated Tables: Check/Text tables
3. Type-3 Entity Type:
Similar to type-2 entity types, used to qualify type-1 and type-4 entity types.
However, type-3 entity types can be maintained indirectly in MDG through their relationships with type-1 entities.
An example of a type-3 entity type is a country code for a customer
Storage and Use Type: 3
Changeable: Indirectly through type-1 entities
Generated Tables: No generated tables
4. Type-4 Entity Type:
Represents dependent objects that are associated with type-1 entities.
Cannot be processed directly in MDG, but their data can be maintained indirectly through the related type-1 entity.
Examples of type-4 entity types include bill-of-materials (BOM) components for a material and contact persons for a customer.
Storage and Use Type: 4
Changeable: Via other entity type
Generated Tables: Database tables.