What is Web Services

Web services are used to retrieve datas from servers. Through the webservices we are transfering discription of some amount of datas that we have to retrieve. According to that information the datas are retrieving from the web. 
                              We can also use the webservices to retrieve the datas from the database also from a front end. It is very effective if we are using the webservices to retrieve the informations that, others can access the same webservices to retrieve the informations with out writing the code for that again and again.

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