Hi.This is some information about the web service.web service is a method of communication between two communicating devices.According to W3c,web service is a software system designed to support interoperable machine-machine interaction over a network.
The word interoperable mainly indicates that the machines inorder to communicate they should be based on a common message exchanging platform which both can understand.The figure gives the generalized idea of web services.
There are mainly two classes of web services.One is the REST compliant web service which manipulates the XML representations.The other one is the arbitrary web services which exhibits some set of operations.
The web services use a communication protocol called simple object access protocol(SOAP) and uses web services description language to describe the data.The web service can be implemented in three main ways.
1)RPC
2)SOA
3)REST
RPC:It is implemented using remote procedure calls where the function retrieves the desired service from service provider via SOAP
SOA:Here the communication is in the form of messages rather than operations.
REST:It uses HTTP or similar kind of protocols to constrain interface to standard operations like GET,POST like that.
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