The selector Element

Definition and Usage

The selector element specifies an XPath expression that selects a set of elements for an identity constraint (unique, key, and keyref elements).

Element Information

• Parent elements: key, keyref, unique

Syntax

<selector
id=ID
xpath=a subset of XPath expression
any attributes
>

(annotation?)

</selector>

(The ? sign declares that the element can occur zero or one time inside the selector element)

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