Topic Map Index
unique
(
XML Representation Element
)
Names
unique
unique
[
XML Schema Namespace
]
Subject Indicators
http://www.techquila.com/psi/xmlschema/representation-element/unique
Description
Used to define a uniqueness constraint on a
type. The uniqueness constraint may apply to a single
field or collection of fields relative to a selection of
elements in the instance document. The selection of the
elements and the fields to be unique are made using
XPath expressions.
Resources
Primer Mention:
