Access to Legacy Applications and Data

Step 2: Defining Application Requirements

1. Compile a list of target host files, keys, and alternate index paths. Define the subset of records to be read from the target Web application.
2. Specify the ADO objects, methods, properties, and collections supported by the data provider that will be used in the application.
3. Consider using Recordset.Filter to define recordsets based on logical search criteria and to search for records based on the application program and user input.
4. Use the ADO errors collection to produce errors in formats that the program can understand. This will prevent passing unnecessary error conditions to the Web browser.
5. Use either the automatic AS/400-to-OLE DB data transformation, or custom mapping, by using a data column description file from the DDM service host.
6. Decide whether to automatically map logon user IDs obtained from the Web browser.
7. Choose a deployment option and decide whether to run the DDM service on the computer running SNA Server, or on the computer running Windows Client for SNA Server.

© 1997-1999 Microsoft Corporation. All rights reserved.