What are the three web services
Using web services
is a matter of course for many people. Many things happen directly between
humans and devices, as the person in front of the screen surfs the web and
makes decisions. But the same also happens between communicating devices. Web Development services LSI have become a development element for web developers. However, these types of applications are a standard way of communicating and working with various web applications.
What is a Web Service?
Web service is an interface
through which two devices (or applications) can communicate with each other.
This technology is base on two fundamental characteristics:
·
Cross-platform - Clients and servers
don't need to have the same configurations to communicate with each other. The
web service then provides a common ground.
·
Sharing: In most cases, a web
service is not only available to a single client but is often access by
multiple clients simultaneously via the Internet.
Web services can be found over
the network and can be call as needed. When enabled, the web service can
provide the functionality to clients that call this web service.
For example, Flipkart delivers
a web service that provides prices for products sold online through
flipkart.com. The outer or presentation layer can be .Net or Java, but any
programming language can interact with the web service.
Types of Web Services
Generally, there are three
types of web services:
1. Soap Web Services.
2. RESTful Web Services
3. WSDL Web Services
1. Soap
Simple Object Access Protocol
(SOAP) is a standard specification for an XML-based messaging protocol.
However, communication between web services and clients takes place using XML
messages. This is simple web service architecture with two components: client
and service provider.
This allows the customer to
communicate with the service provider. Your service provider will create a
standard XML file containing all of the above information. Therefore, when this
file is sent to the client, the client will be able to access the web service.
2. RESTful
In this style of REST
architecture, clients and servers exchange representations of resources using
standard interfaces and protocols. In the REST web service, the response from
the server is treating as a representation of the resource. This view can be
cause from one or more resources. RESTful web services use the methods of the
HTTP protocol for the operations they perform.
3. WSDL
An interface for accessing a
Web service is explain in the XML-based Web Services Description Language (WSDL)
and contains all the information desirable to access the service - WSDL
documents can be compare to IDL interface descriptions, only in the first case
the XML language is used. WSDL is the result of a combination of two
technologies: IBM's Network Accessible Service Specification Language (NASSL)
and Microsoft's Service Description Language (SDL).
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