Holger Friedrich serves as CTO of sumIT AG. sumIT is a Swiss-based consulting company focused on Data Warehousing and Business Intelligence, employing Oracle technology. After obtaining a computer science diploma and a doctoral degree in robotics, machine learning, and data mining, Holger worked for several years in industrial research before co-founding sumIT AG. He has more than a decade of experience in Oracle DWH and BI projects, and he has used the database and Oracle's BI and DI products in numerous projects since 1997. Holger is a regular speaker at Oracle conferences such as OpenWorld and Kscope. He has long-term working relationships with Oracle development and product management in data integration and data warehousing. Furthermore, he is an Oracle ACE for BI and DWH and received Oracle's award for DBA of the year 2016 EMEA.