DTD Validation

DTD (Document Type Definition) validation is a process used in XML (eXtensible Markup Language) to ensure that a document follows a specific structure. Think of DTD as a blueprint for what an XML document should look like, defining the rules for elements, attributes, and how they relate to each other. When an XML file is validated against a DTD, it checks for compliance with these rules. If the document matches the DTD, it is considered valid; if not, it may contain errors or be improperly formed. This helps maintain data integrity and consistency in information exchange.