a file of tagged text

a hierarchical representation of data, similar to a tree with parent/child relationships

a hierarchical structure made of a single basic atomic unit, the XML element, that can hold other elements as its children

an ordered, labeled tree

a sequence of elements, each consisting of free text and/or other elements

a text file to which various tags have been added to give it structure

a tree consisting of various node types

a tree made up of nodes

a tree of elements with only one route or path from the root node of the tree to any other node of the tree

a tree of nested elements, each of which can have none or more attributes

a tree of nodes with child nodes (sub-Elements) referring to the parent nodes and ending in leaf nodes (PCDATA)

a tree on which the transformations are applied

a tree-structured (hierarchical) collection of nodes

a tree-structured, self-descriptive document having a collection of nodes, and that facilitates some form of automatic semantic integration

a tree structure

a (Unicode) text with markup tags and other meta-information

An XML element that can, but might not, include nested XML elements. See XML element.

A document object that is well formed, according to the XML recommendation, and that might (or might not) be valid. The XML document has a logical structure (composed of declarations, elements, comments, character references, and processing instructions) and a physical structure (composed of entities, starting with the root, or document entity).