Which technology is used for querying XML data?

XQuery is specifically designed for querying and manipulating XML data. It allows users to extract data from XML documents, create new XML documents, and transform XML data effectively. XQuery utilizes a syntax that is tailored for navigating XML structures, making it highly efficient for tasks that involve complex queries, including both retrieval and modification of XML content.

Unlike SQL, which is tailored for relational databases and operates on structured data in tables, XQuery operates directly on hierarchical XML data. This distinction is key, as the structure of XML is fundamentally different from that of relational databases, requiring a different approach for querying.

HTML is primarily a markup language used for presenting content on the web and does not have querying capabilities. JSON is a data format that serves as an alternative to XML for data interchange but does not include querying functionality inherent to XQuery. Given these distinctions, XQuery stands out as the appropriate technology for querying XML data.