slide 5

An XML Document is a Sequence of Elements

• Documents
  • are made up of Elements
  • consisting of Markup (“tags”)
  • ... and Element Content
• An element is an identifiable, named component of a document
  (paragraph, author’s name, article title, unit price, bulleted list)

<book-title>Economics for Everyone</book-title>

<publisherLoc>New York</publisherLoc>

<abstract>
<p>This chapter focuses on the role of optical fibers
as a communication channel in lightwave systems. We use
geometrical optics to explain the guiding mechanism and
introduce the related basic concepts. </p>
</abstract>