UML23 — UML 2.3: Errors in example serialization for Profiles in Chapter 18

There are many errors in the example XMI serialization for the profile and the profile application and the xsd in section 18.3.6:

The UML namespaces (in the definitions and the hrefs) refer to version 2.0 (and in some places inconsistently to 2.1) and should be correct for the current version

The profile definition is missing a definition of a namespace and prefix for xmi

The ownedMember tag should be packagedElement to be consistent with how superstructure is serialized.

The isComposite, lower and upper tags are not valid in a superstructure serialization (and upper is not valid in an infrastructure serialization).

The examples are corrected to follow the rules. We remove the schema example altogether because it presupposes that we are publishing an XML Schema for UML, and we are not doing so. The text just preceding the schema example is incomprehensible and unnecessary so is deleted.