Review Technical ETL process for knowledge management I'm looking for source code and all related component/material to review technical ETL process between source database and Data Warehouse in order to increase my knowledge in technical Business Intelligence. Where can I find these types of source code and database?

I can find the database for adventurework OLTP and its DW but not the source code for the ETL process
Kimball Group books are great source of DW knowledge and ETL information in particular.

http://www.kimballgroup.com/html/booksMDWTtools.html

Follow this link, click Tools and Utilities, scroll to Chapter 7 — Design and Develop the ETL System.

Download Sample SSIS packages contains full solutions for Adventure Works.