A Thorough Guide About Web Service

Posted By : Monika Garg | 23-Apr-2018

What is Web Service?

Web Services is the intermediate of communication through which two software applications will transfer data between client and server. The client sends a web request to the server applications and the server then responds to the client. This response will differ based on the web service request type.

 

Why is Web Service Needed?

 

In general, human Beings are used the developed software applications, where a person sends a request to a software application service and then returns a response in human-readable format.In the modern era of technology if you want to build a software application you don't need to build each and everything from scratch.

         

Lots of readymade services are available which you can use into your application and you can start providing those services in your application.

For example, you want to display weather forecast information you don't need to collect, process and render the data in your application. You can buy the weather forecast services from the people who already well-established in processing and publish such kind of data.

 

Web Services can be implemented in different ways, There are two most popular implementations approaches.

  1. SOAP (Simple Object Access Protocol)
  2. REST (Representational State Transfer architecture)

 

What is Web Services Components:

There are mainly following components which are used by all the standard web services:

  • SOAP (Simple Object Access Protocol): to transfer a message over the web.
  • UDDI (Universal Description, Discovery, and Integration):  to describe, publish, and discover the web services
  • WSDL (Web Services Description Language): to describe the availability of web service.

 

 

What is Difference between WebService and WebAPI?

 

Properties

Web Services

Web APIs

Data Structure for information exchange

XML formatted is used for data exchange and communication.

  • SOAP supports XML based data exchange

XML formatted, JSON formatted or plain data is used.

  • REST supports XML based data exchange

Data and Request Compression

XML data cannot be compressed but HTML request can be compressed.

Here data can be compressed.

Defined Standard for data

Standard is defined by WSDL (Web Service Definition Language).

No defined standard.

Example of Protocol used

Web services using SOAP (Simple Object Access Protocol) protocol

Web APIs uses REST (Representational State Transfer) protocol

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About Author

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Monika Garg

Monika is a bright QA Engineer with skills in manual testing and always eager to learn new things. Her hobbies are listening to music and playing games.

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