Specifies that the SQL language conforms to SQL:1999 SQL Database
    Language Standard.

    This includes all the behavior describe for SQL92 plus the
    following changes:

    o  The FOREIGN KEY constraint may list the column names in the
       REFERENCES list in any order. In other dialects the column
       names must be in the same order as the referenced PRIMARY KEY
       or UNIQUE constraint.

    o  This is not an exhaustive list. Refer to the Oracle Rdb
       Release Notes for additional semantic changes for dialect
       SQL99.