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XML (Extensible Markup Language) is the technology for facilitating the exchange of data. XML is implemented using tags. XML can be part of a standard for exchanging data between EPA, its state and tribal partners, localities, the regulated community, and other entities.
XML tags will be established for all EPA standard data elements. These tags have been registered in the EDR as alternate for data element names and can be found on the data element detail page for most of the EPA data standards (see XML Tag Search). An XML tag name can be identified with the Name Context of "XML Tag" or "XML Tag (Draft)". Alternatively, the EDR provides a list of approved XML Tags and draft XML Tags.
XML Registry
The
Environmental Information Exchange Network  has initiated an interim XML Registry. The XML Registry is a tool for sharing information about XML Data Exchange Template (DETs), XML schemas, namespaces, Web Services Description Language (WSDL) files, and other supporting files needed to map data flows between partners. The Registry contains information about schemas under development, as well as schema approved for use on the Network. In time, the XML Registry will provide a clearinghouse for information related to data flows on the Network. The data may also be found in the EDR and READ.
XML Tag Search
To search for a specific word or phrase, enter text or text string in the XML Tag field to retrieve metadata. The search will only query the fields in which you have entered text. To obtain a complete list of data elements by source type (e.g., Data Standard), select an information resource type from the pull-down list and leave the other fields blank.
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