March 2022
Intermediate to advanced
682 pages
22h 58m
English
XML uses tags within a document as a markup language to describe each node within a tree structure such as that of CUSTOMERLIST in Figure 13.1. An XML document can be a standalone document, meaning that there is no information external to the document that defines the markup language. Users can also explicitly define the markup language by writing a Document Type Definition (DTD) or by writing an XML Schema Definition (XSD). A DTD provides a way to define the grammar for specifying the structure of an XML document. An XSD also defines the grammar and, in addition, provides a way to define the format and integrity of the data.
Domain-specific DTDs have been developed for several fields. They allow seamless ...