DuckDB is an embedded database designed to execute analytical SQL queries fast while embedded in another process. It is designed to be easy to install and easy to use. DuckDB has no external dependencies. DuckDB has bindings for C/C++, Python and R. DuckDB is developed by the Database Architectures group of the CWI. It is open source and licensed under the MIT license.
Mühleisen, H.F, & Raasveldt, M. (2018). DuckDB.