Tamino XML Server Version 9.7
 —  Tamino XML Schema Reference Guide  —

xs:selector

Purpose Defines the selector for an identity constraint (xs:key, xs:keyref, xs:unique).
Parent element xs:key, xs:keyref or xs:unique
Child elements xs:annotation
Attributes id, xpath
Attributes
Name Type Description
id xs:ID Assigns an identifier to the schema node.
xpath  

A list of one or more XPath expressions that select the element nodes, each of which contributes a single tuple value to the current identity constraint.

For details of the syntax, see in section 3.11.6 Schema Component Constraint: Selector Value OK of the W3C documentation XML Schema Part 1: Structures.

For an example, see section 5.1 Specifying Uniqueness of the W3C documentation XML Schema Part 0: Primer.

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