22.4. Datatypes
This section covers each of the XML Schema built-in datatypes and provides design issues, implementation considerations, and warnings when implementing an XML Schema datatype as a database column datatype. Both check constraints and triggers are listed, when appropriate, as both implementations are applicable in many cases.
22.4.1. string Datatype
The string datatype in XML Schema is defined to support, at a minimum, UTF-8 and UTF-16 representations. Oracle9i is the first version of the Oracle database to fully support these representations (Oracle8i has partial support for UTF-8). Oracle9i also supports 8-bit character sets such as ISO-Latin-8859-1 that might be appropriate if full international support is not required. Oraclea9 ...
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