XML Schema Definition (XSD)

XML Schema Definition (XSD) is a formal way to define the structure and rules of an XML document, which is a format used to store and transport data. An XSD specifies what elements and attributes are allowed, their data types, and the relationships between them. Essentially, it acts like a blueprint, ensuring that an XML document is well-formed and valid, meaning it follows the defined rules. This helps ensure consistency and interoperability between different systems that use XML to communicate data.