slide 49

XPath and XSLT for Validation

• Validation by locating invalid data
• Node selection by
  • pattern
  • node counting
  • existence tests
  • numeric, boolean, string operations
• Particularly good for:
  • calculations
  • analysis of the tree as a whole
    (schemas focus on parent/child and content)
  • multidocument constraints
    (list of legal values in a separate file)
  • relationship between values (checksum)