XSD

XSD, or XML Schema Definition, is a language used to describe the structure, content, and rules for XML documents. It acts like a blueprint, specifying what elements and attributes are allowed, how data should be formatted, and the relationships between different parts of the document. This ensures that XML files are consistent and follow a predefined standard, making data sharing and validation reliable across systems. In essence, XSD helps define and enforce the "rules of the game" for XML data, ensuring clarity and compatibility.