MonetDB allows to create R functions that run embedded in the database. For example, you can do CREATE FUNCTION rapi00() RETURNS TABLE (d INTEGER) LANGUAGE R { seq(1,10); }; Now, I need my users to create dynamically these user defined functions by entering R statements on a screen; the application will create the functions in the database and run them. Problem is that R allows to run operating system level commands, such as list.files(path=".") or even file.remove("some_file") Will MonetDB allow these external interactions with the operating system, or it runs in a sandbox?