XQuery
Definition
XQuery queries XML data and processes it into new result structures.
A W3C query and transformation language for XML data that extends XPath expressions.
Simply explained
You describe which information is needed from XML documents and how it should be merged or rearranged.
Why it matters in practice
The term contributes to secure, maintainable, and high-performance web applications as well as resilient technical decisions.
Example from business
A manufacturer combines XML catalogs from multiple suppliers into a verified result structure.
Limits and pitfalls
- Dynamic queries, external functions, and large documents can cause security and performance issues.
Origin & history
XQuery 1.0 became a W3C Recommendation in 2007; version 3.1 added, among other things, Maps and Arrays.
Use in mid-sized companies
- Possible example: A manufacturer combines XML catalogs from multiple suppliers into a verified result structure.
Frequently asked questions
What does XQuery mean?
A W3C query and transformation language for XML data that extends XPath expressions. What should you watch out for? Dynamic queries, external functions, and large documents can cause security and performance issues.
Sources
- XQuery 3.1 · W3C, XQuery 3.1
Source checked on 10.10.2026. Editorial application examples are hypothetical; no evidence of real customer results.
Editorially reviewed on: