Whenever a client application talks to the Teradata Database, it indicates its character set (form-of-use for character data) and the Teradata Database returns all character types to the application in that form.
Note that in application programs (within ANSI C programs, for example), Kanji strings can be represented as character strings with mixed single-byte character/multibyte character form-of-use or as strings with fixed width form-of-use.