Access to Legacy Applications and Data

Planning a Migration to Component Services

As you migrate processes and databases from a legacy environment (transaction processing programs running on CICS on a mainframe) to Component Services, the transaction processing programs will continue to run on the mainframe for a while. To migrate to Component Services:

Use Component Services and COMTI in order to extend transaction management so that it includes all the parts of each transaction. This involves updates that take place on databases running on Windows 2000 Server, as well as updates that take place on the mainframe.
Script the ASP pages so that IIS 5.0 calls the COM components that execute the transaction.

You can migrate parts of the legacy transaction infrastructure to SQL Server 7.0 and use Component Services to manage the parts of the transaction on the legacy host. IIS 5.0 can access all of the data by using scripts in ASP pages.