|
What is an XML Web service?- XML Web Service is a unit of code that can be accessed independent of platforms and systems.
- These services are the web application components.
- They are used to interchange data between different systems in different machines for interoperability using HTTP protocols.
- Requests are made and responses are returned in the form of XML as XML is a language and platform independent.
- It exposes useful functionality to web users through a standard web protocol.
- It provides a way to describe their interfaces in enough detail to allow a user to build a client application to talk to them.
- These services are registered so that potential users can find them easily.
Web service components are as follows:
1. SOAP
2. WSDL
3. UDDI
1. SOAP:
- SOAP stands for Simple Object Access Protocol.
- It is a communication protocol that communicates between applications.
- It can run on any operating system.
- It describes how to encode an HTTP header and an XML file for making communication between two computers.
- It is a platform and language independent.
- It has a benefit to allow server firewalls.
2. WSDL:
- WSDL stands for Web Services Description Language.
- It is an XML based language written in XML.
- It is used for describing the web services and the process of accessing it.
- It is an integral part of UDDI that facilitates businesses to be listed themselves and their services on the Internet.
- It navigates for individuals and other business to access the service.
3. UDDI:
- It stands for Universal Description, Discovery and Integration.
- It is an open framework and platform independent.
- It is seen with SOAP and WSDL as one of the three foundation standards of web services.
- It uses WSDL to describe interfaces to web services.
- It is a specification for a distributed registry of web services.
|
