Defining Elements and Attributes in XML Schemas

You can define an element or attribute as part of a complexType. You can also define an element or an attribute as a top-level item. In other words, in the XML document that defines the XML Schema, the element or attribute is a child of the xsd:schema element. An element or attribute that is an immediate child of the xsd:schema element is a global element or attribute.

A global element or attribute cannot

Contain a reference to another element or attribute

Specify values for the minOccurs, maxOccurs, or use properties

This section covers the following topics:

Defining Elements That Carry Attributes and Contain Data in XML Schemas

Defining Elements That Contain Subelements in XML Schemas

Adding an Identity Constraint to an Element

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