Using Meta-Data to Describe XML Data
One of XML's most anticipated features is its ability to use the markup for data, such as for encoding the contents of databases (this was always an unfulfilled dream of the SGML community).
The XML DTD is only one way of describing the data model (the schema) of an XML document. Given the inadequacies of the DTD, there are many initiatives under way to find other alternatives. According to the experts we're probably several years away from having an accepted replacement schema for XML documents. Fortunately, there are already several excellent candidates and probably more on the way.
Here you will:
- • Learn why the XML DTD is inadequate for data applications
- • Learn the basics of three of the major candidates that could become the future XML schema