Extended UNIX Code (EUC) allows for a form of ASCII mixed data. It is an encoding scheme supported by UNIX in far eastern countries which allows for MBCS characters. Each EUC codepage is made up of three character sets, or planes, denoted by G0, G1, and G2 or four character sets, denoted by G0, G1, G2 and G3. The group in which the data belongs is determined by the range of its first and second bytes. G0 is comprised of single-byte characters and is the ASCII invariant coded character set. G1 characters are double-byte characters within another range. G2 and G3 characters are triple-byte characters, distinguished by the first byte and the range of the last three bytes.
EUC conversion is supported by the database manager. EUC characters are converted to SBCS or DBCS characters, or both.