Building a Code Set Registry
A character set is a group of characters, such as the English alphabet, Japanese Kanji, and the European character set. A code set is a mapping of the members of a character set to specific numeric code values. Examples of code sets include ASCII, JIS X0208 (Japanese Kanji), and ISO 8859-1 (Latin 1). Different code set encodings exist for different character sets, but in addition, the same character set can be encoded in different ways.
A DCE cell automatically supports RPC applications that use the DCE Portable Character Set (DCE PCS), which is analogous to the U.S. English character set, and the ASCII and EBCDIC encodings for that character set. An internationalized DCE cell supports RPC applications that use non-English character sets and code sets other than ASCII and EBCDIC. In an internationalized DCE cell, multiple different character sets and code sets can exist, and also multiple different code sets for the same character set can exist. Operating systems generally use string names to refer to the code sets that the system supports. It is common for different operating systems to use different string names to refer to the same code set. For example, one system can use the name ISO8859-1 while another system can use Latin-1. Both names refer to the same code set.
The DCE code set registry provides a mechanism for uniquely identifying code sets and the character sets they encode across multiple heterogeneous operating systems in an internationalized DCE cell. The code set registry is a per-host file that contains mappings between the string names that the host's operating system platform uses for the code sets it supports and the unique identifiers for those code sets. Assigning a unique identifier to a code set provides internationalized DCE RPC clients and servers with a common representation to use when referring to a given code set.
If you are configuring an internationalized DCE cell, you need to build a code set registry on each machine in the cell. The following topics describe the steps involved.
More:
Creating the Code Set Registry Source File
Generating the Code Set Registry File