One of the design goals associated with the UDDI registration data is the ability to mark information with identifiers. The purpose of identifiers in the UDDI registration data, namely for businessEntity and tModel instances, is to allow others to find the published information using more formal identifier systems. For example, businesses may want to use their D-U-N-S (Dun & Bradstreet's Data Universal Numbering System), Global Location Number (GLN), or tax identifier in their UDDI registration data, since these identifiers are shared in a public or private community in order to unambiguously identify businesses. In UDDI registries that are only used in private communities, businesses may also want to use privately known identifiers.

The «identifier» element contains a string or number used to uniquely identify a standard document or a statement. In the ASN, the value of the «identifier» property is always a URI. In RDF, this value is expressed most frequently as "rdf:about".

a globally unambiguous identification of the state corresponding to one of Decider, Superior or Inferior

an association between a unique string and an object

an unambiguous string that is unique within the scope (i

a preferably opaque string of bits that may be used to associate with a resource

a 'relation' between a string and a thing

a string that unambiguously identifies the entry within the gazetteer

a type of property or keyword used to uniquely identify a business or specification

a value that is unique for all rows in the table

A string used to establish and uniquely distinguish the identity of something

A unique entity provided by the HDF5 library and used to access an HDF5 object, such as a file, goup, dataset, datatype, etc.

Unique 32-bit identifier for window group.

1. a symbol used to identify or to distinguish names. 2. a string used the same way.

An unambiguous reference to the resource within a given context

In OAI-PMH an identifier is a unique key for an metadata item in a repository. Each item of metadata in a repository must have a locally unique, persistent identifier. If the repository is registered with the Open Archives Website ( http://www.openarchives.org/community/), and if the repository conforms to the recommended guidelines for generating OAI Identifiers, then the OAI Identifiers of that repository will be globally unique among all registered OAI providers.