The architecture for the OpenEdge database is known as Type II. In prior releases of OpenEdge, the supported architecture was known as Type I. OpenEdge continues to support the Type I architecture, but since Type II offers significant advantages in both storage efficiency and data access performance, you should consider migrating your legacy databases to a Type II storage architecture.

The Type II architecture contains these elements, as described in the following sections:

The elements are defined in your database structure definition file. For details on the structure definition file, see Manage the OpenEdge Database.