Most data modeling methodologies only identify the Entity and the Associative Entity as building blocks. The OLTP and OLAP components of the Enterprise Data Architecture are built using the nine sub-components shown below in blue and green. Blue components are used to construct the enterprise data layer and green components are used to construct the application data layer. Organized around each Class component, these reusable objects will accommodate all known data relationships. These nine components are the building blocks of the Enterprise Data Architecture. .

It is critical to understand what each component does and how it does it