Dani Schnider works as Senior Principal Consultant and Data Warehouse Lead Architect for Trivadis, a Swiss IT consulting company. He finished his studies in computer science at ETH Zurich in 1990. Since 1994, he is developing data models and applications with Oracle databases (version 6 to 12c), since 1997 mainly in Data Warehousing projects. Most of his time he is doing jobs for customers in design, data modeling, ETL development, architecture reviews and performance optimization of Oracle Data Warehouses. He is teacher for several Oracle trainings at Trivadis and co-author of the (German) books Data Warehousing mit Oracle - Business Intelligence in der Praxis and Data Warehouse Blueprints. Dani is Oracle ACE and writes about Data Warehousing with Oracle on his blog, publishes articles and white papers and gives presentations on conferences.