IBM dashDB is a family of SQL databases. It's engine is a blend of DB2, Netezza and the BLU in-memory engine. Any supported DB2 driver will work; it's a drop-replacement for DB2.
The 3 product lines for dashDB are: (1) IBM dashDB for Transactions: A general-purpose, fully managed cloud SQL database. (2) IBM dashDB for Analytics: A cloud SQL data warehouse. (3) IBM dashDB Local: A local version you can install on your own hardware.