Names with double-byte characters

If your installation supports double-byte character set (DBCS) data, you can use double-byte characters alone or mixed with single-byte character set (SBCS) data in your names. The following rules apply when using double-byte characters:

• Names with both double-byte and single-byte characters can contain the same single-byte characters described under Naming conventions.
• You can specify column headings in a form with mixed double-byte and single-byte characters. A heading consisting of double-byte characters only can be up to 19 double-byte characters long.
• Names containing only double-byte characters can contain no more than eight double-byte characters. But a name can be qualified by a user identification. The qualifier can contain as many as eight single-byte characters and cannot contain double-byte characters.
• If your database specifically supports double-byte characters in table names, all names can contain any double-byte characters.
• If your database does not specifically support DBCS data in table names, all names can contain any double-byte characters except those that are represented internally as a double quotation mark (X'7F').

For information on the use and handling of DBCS data, see Using QMF .