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Web Services: A Perspective. Jim Farmer As presented at the Common Solutions Group Meeting May 9, 2002 Chicago, Illinois. Web Services defined. An information technology architecture for the exchange of business messages using open-standards. The business case.

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Web Services: A Perspective

Jim Farmer

As presented at theCommon Solutions Group Meeting

May 9, 2002

Chicago, Illinois

web services defined
Web Services defined

An information technology architecture for the exchange of business messages using open-standards.

the business case
The business case
  • Originally, the exchange of data with others.
  • Now, integration between disparate application, disparate computer systems, disparate operating systems, disparate programming languages—the Enterprise Application Integration EAI bus.

___________________________________________

”Getting access to stove-piped data is the primary reason for implementing Web services.”

Uttam Nasrsu

GIGA Information Group

At the FSA CIO Update Conference

Arlington, Virginia, May 8, 2002

the standards
The standards
  • Data XML
  • Validation Schema
  • Transport SOAP (real-time)

SMTP (batch)

  • Security SAML
  • Description WSDL
  • Directory UDDI
  • Transformation XSLT

Note: Message content is not defined by any of these standards.

in higher education
In higher education
  • Digital library search and retrieval (Columbia, Cornell)
  • Transcripts (California Community Colleges, Florida, Arizona, Ohio)
  • Student Aid (NCHELP, U.S. Department of Education)
  • Security (Internet 2 Shibboleth)
  • Portals (JA-SIG)
why xml and soap
Why XML and SOAP?

“[XML and SOAP] will become a widely implemented ‘standard’ because they are simple.”

Barry Walsh

University of Indiana

at the FSA CIO Update Conference

Arlington, Virginia May 8, 2002

typical soap implementation
Typical SOAP implementation

HTML

over HTTP

SOAP

over HTTPS

College

Target

Data Provider

Access Provider

meteor prototype model
Meteor prototype model

Web Services

HTML

Meteor

XML

Student Access Provider Data Provider

authentication and authorization
Authentication and authorization

TLS

Authentication

Login & Password

SAML

Assertion

College

Target

Data Provider

Access Provider

ebXML Security Profile 3

Non-persistent confidentiality and non-persistent authentication

building web services
Building web services
  • Web services architecture overview

2

find

UDDI Service

Web service requestor

look up web service

3

bind

4

call

Call Web Service

1

publish

Retrieve WSDLDefinition

Register Web Service(at development time)

Web service provider

WSDL Document

the end

The End

Jim Farmer

instructional media + magic, inc.

jxf@immagic.com