Customers using Vantage delivered as-a-service cannot create their own C++ and Java UDFs, UDMs, UDTs, or External Stored Procedures.
External routines, the generic label used for UDFs, table UDFs, methods, and external procedures, are specific variations of one another and share most properties in common. See CREATE FUNCTION and REPLACE FUNCTION (External Form) and CREATE FUNCTION (Table Form).