8.3. The Data Model
The data model we will use for the database tables is based loosely on the W3C's Document Object Model (DOM). Briefly put, the DOM represents an XML document as a node tree, with a top-level document node supporting a tree of nodes (representing elements) and leaves (representing text, CDATA, entity references, processing instructions, and comments). Like the DOM, our data model will need to support namespaces, must maintain the distinction between elements and attributes, and should be able to accommodate text and CDATA content of any length.
Listing 8.1 shows an example XML document (in this case a WML file designed to be displayed on a WAP-enabled mobile device), and Figure 8.1 shows the corresponding DOM; note that a document ...
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