Web Service Architecture

Assalamualaikum..
What is web service? According to Microsoft, web service is a programmable application logic accessible using standard internet protocols. Web service architecture consists of 3 which is SOAP, WSDL and UDDI.

Web Service Model

Roles in web service architecture:

Service Registry

• directory of service descriptions
• act similar like yellow pages
• requestor will find service descriptions from the registry

Service Requestor

• application that is used by user
• invoke the interaction with a service
• request data from registry

Service Provider

• owner of the service
• web browser
• platform that hosts access to the service

Operations in web service architecture :

Find

• requestor find service description from the registry

Publish

• service descriptions must be published in order for the requestor to find from the registry 

Bind

• requestor invokes an interaction with the service at runtime

Web Service Architecture

SOAP	WSDL	UDDI
communication protocol communication between application format for sending message platform independent language independent based on XML simple and extesible	written in XML an XML document used to describe web service used to locate web service	directory service for business communicates via SOAP

Relationship between SOAP, UDDI and WSDL

*Figure above is created based on my understanding. 

*Client communicates with UDDI via SOAP. UDDI is described by WSDL.