11.7. How Identifiers Work

Beyond Categorization, there's also the need to identify a business uniquely by a well-known identifier such as a Federal Tax Id. Following the extensibility theme, UDDI businessEntity structures can be assigned unique ids using a collection of keyedReferences inside an identifierBag. Listing 11.8 shows the identifierBag schema.

Listing 11.8. identifierBag schema
<element name="identifierBag" type="uddi:identifierBag"/>
<complexType name="identifierBag">
  <sequence>
    <element ref="uddi:keyedReference"
             minOccurs="0" maxOccurs="unbounded"/>
  </sequence>
</complexType>

An identifier bag is simply a collection of keyedReference elements. Within an identifierBag, a keyedReference element points to a tModel that defines an ...

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