Schema Evolution publication categorizer

The DTD of a set of XML documents may change due to
many reasons such as changes to the real world events, changes to the
user's requirements, and mistakes in the initial design. In this paper,
we present a novel algorithm called DTD-Diff to detect the changes
to DTDs that defines the structure of a set of XML documents. Such
change detection tool can be useful in several ways such as maintenance
of XML documents, incremental maintenance of relational schema for
storing XML data, and XML schema integration. We compare DTD-
Diff with existing XML change detection approaches and show that
converting DTD to XML Schema (XSD) (which is in XML document
format) and detecting the changes using existing XML change detection
algorithms is not a feasible option. Our experimental results show that
DTD-Diff is 5-325 times faster than X-Diff when it detects the changes
to the XSD files. We also study the result quality of detected deltas.