102
Publishing a Web Service
When you make your service available through a public registry, you essen 
tially open the service's accessibility to the widest possible audience. When a
service is registered in a public registry, any client, even one with no prior knowl 
edge of the service, may look up and use the service. Keep in mind that the public
registry holds the Web service description, which consists not only of the service's
WSDL description but also any XML schemas referenced by the service descrip 
tion. In short, your Web service must publish its public XML schemas and any
additional schemas defined in the context of the service. You also 
must
 publish on
the same public registry XML schemas referred to by the Web service description.
E
When a Web service is strictly for intra enterprise use, you may publish a Web 
service description on a corporate registry within the enterprise.
E
You do not need to use a registry if all the customers of your Web services are 
dedicated partners and there is an agreement among the partners on the use of 
the services. When this is the case, you can publish your Web service descrip 
tion the WSDL and referenced XML schemas at a well known location 
with the proper access protections.
3.6.2 Understanding Registry Concepts
When considering whether to publish your service via a registry, it is important to
understand some of the concepts, such as repositories and taxonomies, that are asso 
ciated with registries. 
Public registries are not repositories. Rather than containing complete details
on services, public registries contain only details about what services are available
and how to access these services. For example, a service selling adventure pack 
ages cannot register its complete catalog of products. A registry can only store the
type of service, its location, and information required to access the service. A
client interested in a service must first discover the service from the registry and
then bind with the service to obtain the service's complete catalog of products.
Once it obtains the service's catalog, the client can ascertain whether the particu 
lar service meets its needs. If not, the client must go back to the registry and repeat
the discovery and binding process the client looks in the registry for some other
service that potentially offers what it wants, binds to that service, obtains and
assesses its catalog, and so forth. Since this process, which is not insignificant,
may have to be repeated several times, it is easy to see that it is important to regis 
ter a service under its proper taxonomy. 
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