[CAnet - news] How to find and re-use web services and XML schema

[As web services starts to impact every discipline and internet application
it is increasing need to find and reuse schema and services. Many markup
language applications in industry, government, and academia which began in
the 1985-1998 timeframe as SGML applications have subsequently migrated to
XML. There are an incredible number of existing XML schema and web services
covering a whole range of fields and topics from astronomy to mind reading!
Some excerpts from a recent IBM developerWorks XML tip - BSA]

http://www-136.ibm.com/developerworks/?ca=dnx-506

TOPIC: Look up XML schemata and Web services with these helpful resources 

It's not always easy to find XML schemata and Web services that meet your
exact needs. This tip shows you how to comb through the enormous variety of
Internet resources to find schemata and Web services using common search
criteria.

FINDING XML SCHEMATA

When it comes to comprehensive coverage, it's hard to beat XML.org
(http://www.xml.org/), and in particular The Cover Pages
(http://xml.coverpages.org/). Robin Cover, who maintains the resource, was
honored by his peers this year with the XML Cup for his long chronicling of
XML (and SGML) standards. The easiest way to filter The Cover Pages to find
only schemata is by reference to the XML Applications and Initiatives page
(http://xml.coverpages.org/xmlApplications.html). Overall, The Cover Pages
offer so much volume that it doesn't necessarily make the best quick
reference, but it is a good place to go to find the details on some schema
you've heard about. However the parent page, XML.org, has a Schemas/DTD
Registry (http://www.xml.org/xml/registry.jsp), organized by topic and
searchable by keyword.

One way to find XML schemata is to search for the instances and work
backwards. Standard search technologies can help here. Bob DuCharme's
article "Googling for XML"
(http://www.xml.com/pub/a/2004/02/11/googlexml.html) offers some very
interesting and useful tips on how to conduct such searches with the most
popular engine. Google also provides a useful resource in its Google
Directory index for XML
(http://directory.google.com/Top/Computers/Data_Formats/Markup_Languages/XML
/).
_________________________________________________________
FINDING WEB SERVICES AND RDF SCHEMATA
The best known source for finding public SOAP Web services is XMethods
(http://xmethods.net/). It has a comprehensive list of SOAP services that
you can sort by several criteria. It also provides a demo client so you can
try out the services right from the index site. You can also keep track of
the listings on XMethods programmatically using UDDI, RSS, and other means. 
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[email protected]
www.canarie.ca/~bstarn

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