Unicode versions
Although Unicode provides a consistent way of representing text across multiple languages, there are different versions which provide different data sizes for each character.
- UCS-2
- ISO encoding standard that maps Unicode characters to 2 bytes each. UCS-2 is the common encoding
standard on Windows™.
HCL OneDB ODBC Driver for IBM AIX® platforms supports UCS-2 encoding. HCL OneDB ODBC Driver for Windows supports only UCS-2.
- UCS-4
- ISO encoding standard that maps Unicode characters into 4 bytes each.
The HCL OneDB ODBC Driver supports UCS-4 on UNIX™ platforms.
- UTF-8
- Encoding standard that is based on a single (8 bit) byte. UTF-8 defines a mechanism to transform
all Unicode characters into a variable length (1 - 4) encoding of bytes.
The HCL OneDB ODBC Driver uses UTF-8 encoding for all UNIX applications that connect to the Data Direct (formerly Merant) driver manager.