XML Hierarchical Tree

An XML file is structured as a hierarchical tree of elements, beginning with a single root element that encloses all other elements. Each element consists of a start tag, content, and an end tag, with elements optionally containing attributes that provide additional information. Elements can nest within each other to represent complex data relationships, and the structure follows strict syntax rules such as proper tag nesting and case sensitivity. XML files often start with an optional declaration specifying the XML version and encoding. This organized format makes XML both human-readable and machine-readable, ideal for data interchange and storage.