Use PWX batch application and relational connections to extract and load data for relational databases and nonrelational data sets and files through PowerExchange. PWXPC connects to PowerExchange through the PowerExchange Call Level Interface (SCLI).

When you use PWXPC, you can extract all records for multiple record types in a single pass for IMS unload data sets, VSAM data sets, and sequential files. In contrast, PowerExchange ODBC connections read a single record type at a time, which requires multiple passes of the data.

The following figure shows the data flow of source data from PowerExchange through PWXPC and PowerCenter to the target tables: