Chapter 17. XPath primer Friendly Tutorial
Addressing multiple objects
Children and descendants
XPath is a notation for addressing information within a document. That information could be:
An “executive summary” of a longer document.
A glossary of terms whose definitions are scattered throughout a manual.
The specific sequence of steps, buried in a large reference work, needed to solve a particular problem.
The customized subset of information that a particular customer subscribes to.
All the sections and subsections of a book that were written by a particular author or revised since a specific date.
For documents holding information from relational databases, all the typical queries made of relational databases: a particular ...