This research is to assist the implementation of an architectural model of a database by using IDEF1X. Utilization IDEF1X model is very easy to apply. The use of diagrams consisting of a square shape and the arrow represents the shape of the data as well as the connection between the data. It is applied to describe the architecture of the database that is part of the Enterprise arhitecture stages Planning (EAP) from Stephen Spewak. The idea of IDEF1X is to minimize the complicated form of the description of database architecture. Where this model is the definition of database architecture models with reference to business entities in the business functions in the Enterprise