XML by Example

NOTE

The word parser comes from compilers. In a compiler, a parser is the module that

reads and interprets the programming language.

In a compiler, the parser creates a parse tree, which is an in-memory representation of

the source code.

The second half of the compiler, known as the backend, uses parse trees to generate

object files (compiled modules).

Validating and Nonvalidating Parsers

XML documents can be either well-formed or valid. Well-formed documents

respect the syntactic rules. Valid documents not only respect the syntactic

rules but also conform to a structure as described in a DTD.

Likewise, there are validating and nonvalidating parsers. ...