Supported Collation Sequences
In a computer, if no other collation sequence is enforced, the sequence derived from the machine’s native character set--either ASCII or EBCDIC--is used. The sorting order of these character sets derives from the internal numeric representation of each character.
In addition to the sequences derived from ASCII and EBCDIC, Ingres supports the following local collation sequences:
• Multi, a sequence derived from the DEC Multinational Character Set
• Spanish, a sequence derived from the Spanish language
• Unicode_french, a French Unicode collation sequence for Unicode columns
If none of these sequences adequately fills your needs, you can write your own local collation sequence.