What is an XML schema file?

Related questions

1. What is XML and use of XML?
2. How do XML files work?
3. What is XML schema used for?
4. Does XML indentation matter?
5. Why XML is needed?
6. What is the main use of XML?
7. What are XML files used for?
8. How does XML schema work?
9. What are advantages of XML?
10. What is DTD XML?

Tags

1. #describe
2. #specifies
3. #recommendation
4. #programmers
5. #content
6. #extensible
7. #world
8. #schema
9. #verify
10. #markup
11. #consortium
12. #formally
13. #language
14. #elements
15. #piece
16. #definition
17. #document