INTRODUCTION TO JSON

XML

     What is XML? The Extensible Markup Language (XML) is a simple text-based format for representing structured information: documents, data, configuration, books, transactions, invoices, and much more. It was derived from an older standard format called SGML (ISO 8879), in order to be more suitable for Web use

JSON


    Moving on to JSON, it is a text-based data format following JavaScript object syntax, which was popularized by Douglas Crockford Even though it closely resembles JavaScript object literal syntax, it can be used independently from JavaScript, and many programming environments feature the ability to read (parse) and generate JSON.

    Is a string whose format very much resembles JavaScript object literal format. You can include the same basic data types inside JSON as you can in a standard JavaScript object  strings, numbers, arrays, booleans, and other object literals. This allows you to construct a data hierarchy.

AJAX


  AJAX or "Asynchronous JavaScript and XML",   is a technique for creating fast and dynamic web   pages. AJAX allows web pages to be updated   asynchronously by exchanging small amounts of   data with the server behind the scenes. This   means that it is possible to update parts of a web   page, without reloading the whole page.

  It is widely used in client side programming   through JavaScript to allow for data to be sent and   received to and from a database / server.


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