Specifies that the SQL precompiler correctly processes a program
    for access to the specified database type. For more information
    regarding database options, see the Oracle Rdb SQL Reference
    Manual.

    The precompiler database option can in turn be overridden by an
    attach to a database at run time. On the DECLARE statement, SQL
    sets the database options of the specified database.

    By default, the SQL precompiler determines the valid database
    from the database used to compile the program. If no database
    is used to compile the program, the precompiler processes the
    program for a database created with the most recent version of
    Oracle Rdb.