Database: OLTP, OLAP, data warehouse design.
Data Science: Machine learning and Data mining algorithms.
Programming languages: PL/SQL, SQL, Java, Python, R, Octave, shell scripts
BigData: Hadoop, MapReduce, Hive, Pig, Oozie, Hbase, Spark.
Visualization: Oracle BI EE
noSQL: MongoDB, Cassandra
Conceptions: Object-Oriented Design, Database Concepts, Data Warehouse, Business Intelligence
Software: Oracle Data Integrator (ODI), IDEA, PL/SQL Developer, Toad, Power Designer, SQL Server 2005 (SSIS, SSAS, SSRS), Microsoft Azure Machine Learning.
Methodologies: Oracle Data Warehouse Method (DWM), Scrum.