Building Distributed
Applications
Using the Progress AppServer
Performance Issues Related to Schema Transmission
When there is a remote connection to a database from a 4GL client, database schema information has to be constructed at the client. This involves network traffic to communicate the schema information from the database server to the client (even local schema caches require updates due to schema changes). For information on local schema caches, see the section on reducing connection times when connecting 4GL clients to databases in the Progress Client Deployment Guide.
By using the Application Server process as the only mechanism to access the database, a 4GL client no longer needs to connect to the database. This eliminates network traffic, associated with the delivery of the schema information, to the remote client.
Copyright © 2004 Progress Software Corporation www.progress.com Voice: (781) 280-4000 Fax: (781) 280-4095 |