Interoperability of the web services
RSS and Atom feeds have now been there on the web for a long time. If you have ever used any such services that contain new feed you have actually got yourself into the domain of web services. Web services are provided by the websites in order to publicize their data and make it available upon various portals. Data is exchanged between the server and the client. The basic structure of a web service follows an XML data format or arrangement. This format is used to send the requests that have uniform value both to the server and the client. Thus this allows the exchange easy comprehendible. Most of the web services rely upon this structure of sending and receiving data on requests from a client side.
A web service may seem analogous to a form however the major difference is the action methodology used by the two entities. While the form uses an HTML structure based on some scripting language whereas the web services simply rely upon XML.
RSS is the best example of Web services that are available abundantly over the internet. The major tools that are used to enable such services on the distributed computing environment are J2EE and .NET for hosting and implementing such services.
The internet is interspersed with numerous structures. Some people used .NET and others use J2EE. Thus to bring a uniformity among these heterogeneous environments while the implementation of web services one must be able to communicate and call the other. That is a J2EE client must be able to interact with a .NET client and vice-versa. This is called the interoperability of the web services.
Interoperability provides the power to a web service to operate across varied platforms irrespective of the applications used by the different developers. Many vendors use Java for developing applications. However the application is not meant for use only by the Java platform users. It would be uniformly accessed by the .NET, pearl and other such developing platforms.
Thus interoperability allows the interaction between these services possible. Web services exchange data by means of XML. This allows that certain bit of flexibility which allows the services developed on various platforms exchange between them and work seamlessly. The web services should be able to interpret the XML documents. The XML schema allows the services to see the actual way of how to map the data represented on the XML. This way the interoperability in such various environments is materialized.
The internet is a vast connection of systems and computers. It is not possible that every system on the internet would use the same standard and norms. There are some basic networking protocols that interconnect these systems on the web. But to have real access to the web services and to get the full benefit of such services upon the entire available platform on the web one need to be extremely flexible. Thus for the benefit of the client as well as for the server that develops and hosts the application the web application should be designed to be platform independent. Basically for these reasons we need to apply a norm that can be interpreted and accepted by all. This interoperability is provided to us by the XML.
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