For over 10 years, Amin Kalantari has implemented applications using Oracle in terabyte scale Databases. His business fields include Banking; Finance; European CERIF; traffic control systems with some experience in using USSD and Telecom infrastructure. His technical experiences includes: Oracle DB Development, data modeling, ETL and DBA. Moreover he has practical experiences in implementing Data Warehouse, OBIEE, RAC and APEX. Apart from all DBA and design tasks, he has developed over 400000 lines of PL/SQL code, used by a wide variety of technologies, from COBOL to APEX and SOA. he has also taught PL/SQL. After years of experience and courses about DB, DW, OBIEE, Data Mining, Finance, Accounting; now he has been participating in analysis and development of an enterprise Banking OLAP system.