Mappings of CCSIDs to encoding names for serialized XML output data

That declaration has the following form:

<?xml version="1.0" encoding="encoding-name"?>

In general, the character set identifier in the encoding declaration describes the encoding of the characters in the output string. For example, when XML data is serialized to the CCSID that corresponds to the target application data type, the encoding declaration describes the target application variable CCSID. An exception is the case where the application performs an explicit XMLSERIALIZE function with INCLUDING XMLDECLARATION. When you specify INCLUDING XMLDECLARATION, the database manager generates an encoding declaration for UTF-8. If the target data type is a CLOB or DBCLOB type, additional code page conversion might occur, which can make the encoding information inaccurate. If the data is further parsed in the application, data corruption can result.

Where possible, the DB2 database manager chooses the IANA registry name for the CCSID, as prescribed by the XML standard.