Schema Evolution publication categorizer

Extensible Markup Language (XML) has grown rapidly over the last decade to become
the de facto standard for heterogeneous data exchange. Its popularity is due in large
part to the ease with which diverse kinds of information can be represented as a result
of the self-describing nature and extensibility of XML itself. The ease and speed with
which information can be represented does not extend, however, to exchanging such
information between autonomous sources. In the absence of controlling standards,
such sources will typically choose differing XML representations for the same concept,
and the actual exchange of information between them requires that the representation
produced by one source be transformed into a representation understood by the
other. Creating this information exchange ‘‘glue’’ is a tedious and error-prone process,
whether expressed as Extensible Stylesheet Language Transformation (XSLT), XQuery,
Javae, Structured Query Language (SQL), or some other format. In this paper, we
present an extensible XML mapping architecture that elevates XML mapping
technology to a fundamental integration component that promotes code generation,
mapping reuse, and mapping as metadata.