XSD Tutorials - Herong's Tutorial Examples - v5.23, by Herong Yang
Identity-Constraints: unique, key and keyref
This chapter provides notes and tutorial examples on identity constraints. Topics include introduction of 'unique', 'key' and 'keyref' identify constraints; XML and XSD examples of using identity constraints.
What Are Identity-Constraints?
What Is "unique" Identity-Constraint?
What Is "key" Identity-Constraint?
What Is "keyref" Identity-Constraint?
Takeaways:
Table of Contents
XML Editor and Schema Processor - XMLPad
Java API for XML Processing - JAXP
JAXP - XML Schema (XSD) Validation
Xerces2 Java Parser - Java API of XML Parsers
Introduction of XSD Built-in Datatypes
"string" and Its Derived Datatypes
"decimal" and Its Derived Datatypes
"dateTime" and Its Related Datatypes
Miscellaneous Built-in Datatypes
Facets, Constraining Facets and Restriction Datatypes
"simpleType" - Defining Your Own Simple Datatypes
►Identity-Constraints: unique, key and keyref
Assertion as Custom Validation Rules
XML Schema Location and Namespace in XML Documents
Overriding Element Types in XML Documents