The World Wide Web Consortium (W3C) released the Document Object Model Level 3 Core and Load and Save specifications as W3C Recommendations. The specifications reflect cross-industry agreement on a standard API for manipulating documents and data through a programming language (such as Java or ECMAScript). The DOM Level 3 Core extends the platform- and language-neutral interface to access and update dynamically a document’s content, structure, and style first described by the DOM Level 2 W3C Recommendations. DOM Level 3 provides a standard set of objects for representing XML documents and data, including namespace, XML Base, and XML Schema datatypes support. DOM Level 2 was designed for HTML 4.01, XML 1.0, and Namespaces in XML. With DOM Level 3, authors can take further advantage of the XML platform. It provide support for XML 1.1 and is aligned with the XML Information Set, specification which is also used by other W3C Recommendations such as XML Schema 1.0 and SOAP 1.2. DOM Level 3 enhances the support for XML namespaces and schema-type information. It delivers critical functionalities for Web services applications, as well as other mainstream XML applications.