Progress/400
Product Guide
Inside Progress/400
In a client/server architecture, accessing DB2/400 database files through the DataServer involves migrating the data definitions into the Progress/400 environment on the AS/400 and creating a schema holder on the client with those same data definitions so that Progress applications can read them. The client component also includes the Progress/400 Data Dictionary, which allows you to maintain DB2/400 data definitions from the Windows Progress client.
The central components of the Progress/400 product are the server schema, the client schema holder, and the schema image.
Figure 1–3 shows the Progress/400 internals.
Figure 1–3: Progress/400 Internals
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In the native architecture, you still migrate the data definitions into the Progress/400 environment on the AS/400, but instead of creating a schema holder remotely, you create a schema image. You can use the Windows client to synchronize your schema image.
You can manage all of your data definitions through your Windows client. However, you still have the option of maintaining the DB2/400 data definitions by means of DDS (including SQL/400 and IDDU) on the AS/400.
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