Updating is an ongoing process for propagating changes from records in the DMSII database to the secondary database. DATABridge uses the audit files created by DMSII to extract and apply the updates to the secondary database.

Updating can be accomplished using exclusively DATABridge Host software. Alternatively, you can incorporate DATABridge Client software to perform this function.

Host-based updating

In this method of updating, you run DATABridge Span to retrieve updates from DBEngine and then write those records to one or more data files on the host. You then transfer those files to the new location and load the data into a secondary database.

An advantage of using host-based updating is that you can replicate DMSII data to any system, even if Attachmate has not developed a DATABridge Client for that particular system.

A disadvantage of this method is that it puts more responsibility on you to deliver and process the updates in the data files.

Client-based updating

In this method of updating, a DATABridge Client program (typically running on another system) communicates with DBServer, which retrieves information from DBEngine.

The DATABridge Client requests updates from DBServer, which in turn calls the appropriate entry points in DBEngine to retrieve the modified records. The DATABridge Client program then updates the client database with those changes.