Oct 09 - 2020
Web service is a standardized medium to propagate communication between the client and server applications on the World Wide Web. A web service is a software module that is designed to perform a certain set of tasks.The web services can be searched for over the network and can also be invoked accordingly.
How to work web service:
These requests are made through what is known as remote procedure calls. Remote Procedure Calls(RPC) are calls made to methods which are hosted by the relevant web service.
The main component of a web service is the data which is transferred between the client and the server, and that is XML. XML (Extensible markup language) is a counterpart to HTML and easy to understand the intermediate language that is understood by many programming languages.
So when applications talk to each other, they actually talk in XML. This provides a common platform for application developed in various programming languages to talk to each other.
Web services use something known as SOAP (Simple Object Access Protocol) for sending the XML data between applications. The data is sent over normal HTTP. The data which is sent from the web service to the application is called a SOAP message. The SOAP message is nothing but an XML document. Since the document is written in XML, the client application calling the web service can be written in any programming language.
Why do you need a Web Service?
Modern day business applications use variety of programming platforms to develop web-based applications. Some applications may be developed in Java, others in .Net, while some other in Angular JS, Node.js, etc.
Most often than not, these heterogeneous applications need some sort of communication to happen between them. Since they are built using different development languages, it becomes really difficult to ensure accurate communication between applications. Web services provide a common platform that allows multiple applications built on various programming languages to have the ability to communicate with each other.
Type of Web Service
There are mainly two types of web services.
- SOAP web services.
- RESTful web services.
In order for a web service to be fully functional, there are certain components that need to be in place. These components need to be present irrespective of whatever development language is used for programming the web service.
Advantages of web services
We already understand why web services have emerged in the first place, which is to provide a platform that can allow different applications to talk to each other. But let's look at some other benefits of why using web services is important.
- Network Business Function Detection
- Interoperability between applications
- Protocol uniformly
- Lower connection cost
Web services engineering
- The requester
Web service Characteristics
Web services have the following special behavioral characteristics:
- They are XML-Based .
- Loosely Coupled
- Synchronous or Asynchronous functionality
- Ability to support Remote Procedure Calls (RPCs) Supports Document Exchange
Uses of Script:
Script scripts are used to automate and execute operations on a computer. The scripts have made the Internet environment much usable, comfortable and more flexible. Each Script represents texts that contain a list of instructions that are executed by a program or a specific programming language in order to achieve the desired action. Thus, users will be prevented from taking many steps to reach certain results while browsing a website or working on computers. A script is the nature of text that allows it to be opened and edited by text editors, i.e. it is open source