The following table lists the values for the RDB$SOURCE_LANGUAGE
    column.

    Value Language

    0     Language undefined
    1     Ada
    2     C
    3     COBOL
    4     FORTRAN
    5     Pascal
    6     Reserved for future use.
    7     BASIC
    8     GENERAL
    9     PL/I
    10    SQL - default for stored functions and stored procedures