Data Science, Artificial Intelligence, Machine Learning, Knowledge Graph, Data Visualization.
Architectures, Data Lakes, Data Lakehouses, NoSQL, DB Internals, Data Warehousing, Dimensional Modeling, Data Science and Java / J2EE aspects of the technology. Published author of a book on SQLEngines and developed MOOC course on Big Data Hiked to Mt. Everest Base Camp in Oct 2016. Blogs at