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Last Updated: 10/26/2018

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Property Tax Administrators

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​XML (Extensible Markup Language) files help store and exchange data across a wide range of computer platforms and software.

XML is similar to HTML, but is tailored to specific uses by custom tags that are stored inside XML files. These tags control how the data is used for a specific purpose, such as submitting, reading or updating a file.

XML files are described and validated by an XML schema, which defines what various tags mean and how information should be structured within the file.


  • XML Primer
    Basic information on XML terminology
  • Validating XML Data with an XML Schema
    This document, updated as of May 2007, discusses XML validation concepts, 10 common XML transmission errors, shows an example of validation with XMLSpy, and an example of manipulating large XML data sets with Ant & Eclipse.
    Provides free online training courses in XML
    Altova XMLSpy and tools

For the current homestead file schema, go to the Homestead Files - PTR and Duplicate page.


Phone: 651-556-3097