You can model operational and data warehouse data structures in PDMs, and specify mappings between the operational data sources and the data warehouse to generate extraction scripts to populate the data warehouse with operational data.
In this kind of relational-to-relational mapping, operational tables are mapped to data warehouse tables with a type of fact or dimension, and operational columns are mapped to warehouse columns.
You can generate a script file for each data source, you can also select the tables in the data source which select orders will be generated in the script file. The extraction scripts list all the select orders defined in the table mappings.