The keyref element specifies that an attribute or element value correspond to those of the specified key or unique element.
The keyref element MUST contain the following (in order):
(The ? sign declares that the element can occur zero or one time, and the + sign declares that the element must occur one or more times inside the keyref element)
Attribute | Description |
---|---|
id | Optional. Specifies a unique ID for the element |
name | Required. Specifies the name of the keyref element |
refer | Required. Specifies the name of a key or unique element defined in this or another schema |
any attributes | Optional. Specifies any other attributes with non-schema namespace |