This document provides an overview of Pentaho Data Integration (PDI) version 4 and its support for MySQL. It begins with an introduction to Pentaho as an open source business intelligence suite. It then discusses the key components and features of PDI, including extraction, transformation, loading, and support for over 35 database types. New features in version 4 are highlighted, such as improved visualization, logging, and plugin architecture. The document concludes with a section focused on MySQL support in PDI, including JDBC/ODBC integration and bulk loading jobs.