Get started: ibm.biz/ibmbigsql. IBM® Big SQL is a hybrid SQL engine for Hadoop that enables you to easily query big data across the enterprise. You can use a single database connection or query to connect to disparate sources such as HDFS, RDMS, NoSQL databases, object stores and WebHDFS. The solution provides low latency, and supports ad-hoc and complex queries. It offers high performance, security, SQL compatibility and federation capabilities to help you get the most from your modern data warehouse and SQL on Hadoop.