can someone help me telling what is RESTful and difference with `web Service'?
i tried to search but i get confused between it and web service can anyone help ?
It's name clearly state its meaning that services provided on the web are called a web service
web service has two type REST API and SOAP API
RESTful Web Services are basically REST Architecture based Web Services. In REST Architecture everything is a resource. RESTful web services are light weight, highly scalable and maintainable and are very commonly used to create APIs for web-based applications.
SOAP (Simple Object Access Protocol) is a messaging protocol that allows programs that run on disparate operating systems (such as Windows and Linux) to communicate using Hypertext Transfer Protocol (HTTP) and its Extensible Markup Language (XML).
RESTful is one kind of web service. Another kind is SOAP. I think comment in this link will help you
https://stackoverflow.com/a/2285743/4874281
Related
Right now I'm working in WebApi (trainee developer), and have good knowledge in webapi . But , I don't know anything about WebServices.
My Questions are :
1.What is WebServices?
2.What is the Use of WebServices?
3.Instead of WebServices why we are using WebApi.
4.Where we can use WebServices?
5.At a time We Can use both Webservices and WebApis?
Exposing the Existing Function on the network
A web service is a unit of managed code that can be remotely invoked using HTTP. That is, it can be activated using HTTP requests. Web services allow you to expose the functionality of your existing code over the network. Once it is exposed on the network, other applications can use the functionality of your program.
Interoperability
Web services allow various applications to talk to each other and share data and services among themselves. Other applications can also use the web services. For example, a VB or .NET application can talk to Java web services and vice versa. Web services are used to make the application platform and technology independent.
Standardized Protocol
Web services use standardized industry standard protocol for the communication. All the four layers (Service Transport, XML Messaging, Service Description, and Service Discovery layers) use well-defined protocols in the web services protocol stack. This standardization of protocol stack gives the business many advantages such as a wide range of choices, reduction in the cost due to competition, and increase in the quality.
Low Cost Communication
Web services use SOAP over HTTP protocol, so you can use your existing low-cost internet for implementing web services. This solution is much less costly compared to proprietary solutions like EDI/B2B. Besides SOAP over HTTP, web services can also be implemented on other reliable transport mechanisms like FTP
For Example in Asp.Net Core : https://dzone.com/articles/step-by-step-aspnet-core-restful-web-service-devel
So I have currently been assigned to read about Web Services. I was going through the differences between REST, XML-RPC and SOAP and came across this particular link :
REST vs XML-RPC vs SOAP
It mentions this following, in terms of authentication and authorization
As for authentication and authorization, SOAP places the burden in the hands of the application developer. The REST methodology instead takes into account the fact that Web servers already have support for these tasks. Through the use of industry-standard certificates and a common identity management system, such as an LDAP server, developers can make the network layer do all the heavy lifting.
I was not able to understand this particular reference. Can some one explain how this happens in detail?
A web service is method or mechanism to communicate between different applications using open standard such as XML, WSDL, and SOAP. Using web service different device or program communicates over network
Type of WebService
SOAP Web Service
RESTFul Web Service
more information you can check :http://entityclass.in/rest/home.htm
I am trying to learn rest web service and every where i found written that rest works on HTTP protocol. I just want to know what other protocol can be used for building rest service. Link for an example will be great help
REST is 'bound' to HTTP, since the use of the HTTP methods GET, POST, PUT, DELETE is quite central to REST.
First of all, REST is is a software architecture style for building scalable web services.
You are talking about REST when applied to webservices.
Web service APIs that adhere to the REST architectural constraints are
called RESTful APIs.
To answer your question
what other protocol can be used for building rest service
I first need to clarify some things:
You are asking about underlying web service protocols.
Now a web service is "a software system designed to support interoperable machine-to-machine interaction over a network". The network you are interested in is also the best know i.e TCP/IP aka the internet.
Now you are interested in particular about web services which adhere to the REST architectural constraints.
A REST-compliant Web service would be one who's primary purpose of the service is to manipulate representations of Web resources using a uniform set of stateless operations.
The protocol that is used for a RESTful web service
First you need to understand that you are addressing the application layer of the OSI model. HTTP is an application layer protocol of the OSI model.
Theoretically protocols from this list(application layer protocols) which :
can be used to build web services
conform to the REST architectural constraints (stateless,layered system)
could be used for a REST-ful service.
I have searched a lot upon internet but still i didn't get the clear difference between web services and web APIs? Somewhere I read that all web services are API's but all API' are not web services. How?
What all I know is both allow to utilize the functionality of other applications.Can someone describe me clear difference?
I have been on the same journey to learn the differnce between Web API (not JUST API) vs Web Services.
First, we know for a fact that both use the Web as the communication tool as stated by #Kris.
While looking at these 2 videos, both serve as the "middleman" (the waiter in the restaurant) for a client to ask a Web Server to process and deliver a response.
Web Service (From 0:35)
API (In general) (From 1:12)
When I was looking for an actual differnce between the two, usually most articles and videos go on an unrelated comparison between "Web Services vs API" as they exclude the "Web" out of "Web API".
See this article, for example, which contains the title "Web API Vs Web Service...." yet, contain sub-titles like:
"Differences of API vs Web Service"
"Pros and Cons of Web Services vs API Service"
"Web Service vs API: Fueling Both With Scraping Robot’s API"
The only difference I could find is if we were to discuss this in .NET context.
Here's a question post related to this.
To sum it up, Web Services are used in the SOAP protocal while Web API is usually created in the RESTful way. The more detailed answers are in the post but ultimatelly do not answer the main question that is asked.
Conclusion: The question raised in the public domanin has no clear definition to what is difference between the two, thus the 2 terms are ,for the most part,
interchangeable
All web services are APIs. An API is an Application Programming Interface. But there are offline APIs, which are not web services. There are APIs for all things from Office to Websites. The API is just a defined interface to be able to control/communicate with some software. Web Services just provide that means of connecting over the web.
There is more to discuss when you are talking about APIs which are communication protocols and data formats, but you get the basic idea.
An API (Application Program Interface) is the interface through which another program can communicate with a program.
A web service in this context is one of those programs with an API. 'Web' means that it is accessible via the web, mostly via HTTP. A service usually has a well defined purpose.
For instance a date web service's purpose could be to provide the current date. The API of my service would have a single 'endpoint': get the date. The service then implements this API. It somehow retrieves the date and sends it back.
What does a Web service really mean ? I am not looking for a theoretical explanation, I am looking for something practical.
I was thinking that anything I can call from an external client is a Web service, so a basic PHP which returns JSON data could be a Web service.
But then I started reading about Web services in W3Schools.org and I got confused. If the PHP URL which returns JSON data is a web service, why would I need to do SOAP, WDSL etc ... to create a Web service. Isn't it extra work?
Also, if SOAP is the way data is sent back and forth, what about other transport types?
What differentiates a RESTful Web service from a SOAP based web service?
When you are talking about a webservice people generally misunderstand what it means, a webservice is simply a way to interact between a and b that abstracts the use of local technology standards. A WSDL defines the way in which the SOAP message is being sent over the channel. REST uses JSON over HTTP, WSDL uses SOAP over HTTP.
The advantage of a webservice is, say you develop one piece of code in .net and you wish to use JAVA to consume this code. You can interact directly with the abstracted layer and are unaware of what technology was used to develop the code.
SOA is a set of design paradigms and standards that tell you how to develop your services, in SOA each service is meant to comply with the principles listed below. WSDL is generally linked with but not essential for a SOA solution. If you wish to learn about SOA google "Thomas Erl SOA".
Priciples of SOA
Standardized service contract
Service loose coupling
Service abstraction
Service reusability
Service autonomy
Service statelessness
Service discoverability
Service composability
This Q&A Restful vs Other Web Services brings a lot of light to what is a webserver, and differences from SOAP and REST. Id recommend to read all the answers (many of them are very good).