What are Web Services

Panorama
sur les
Web Services
Didier DONSEZ
Université Joseph Fourier (Grenoble 1)
IMAG/LSR/ADELE
[e-mail]

Didier Donsez, Web Services
Agenda Web Services
èDefinition
èCore Technologies
ØSOAP
ØWSDL
ØUDDI
èRelated Technologies
èWeb Services and Security

Didier Donsez, Web Services
What’s a Web Service ???
èWhat are Web Services ?
ØBusiness objects that can be deployed and combined
over the internet, with loose dependence on
technologies and protocols.
Ø(Components of) modular applications deployed over
internet technologies, with a predictable format and
behaviour.
èYet another distributed objects technology ?
ØRemote invocation of Web services SOAP
ØDescribe Web services WSDL
ØRegister & Discover Web services UDDI
èXML-based standards

Didier Donsez, Web Services
Architecture of an Web Service
Step 1 : Deployment
Web Services Providers
Web
Server
Web
Service Back Office
And
Enterprise
Systems
Registered web services
UDDI Directory
Application
Server
EAI
&
Connectors
Business
Object
Business
Object
Business
Object
Web
Service
WSDL
Description
WSDL
Description
green
yellow
white

Didier Donsez, Web Services
Architecture of an Web Service
Step 2 : WS Registration
Web Services Providers
Web
Server
Web
Service Back Office
And
Enterprise
Systems
Registered web services
UDDI Directory
Application
Server
EAI
&
Connectors
Business
Object
Business
Object
Business
Object
Web
Service
WSDL
Description
WSDL
Description
WSDL
Description
WSDL
Description
WSDL
Description
WSDL
Description
green
yellow
white