What does RESTful API mean?

The client-side requirements for a proposed project had the following specifications:

. Call RESTful API, passing student UID and requested information domain
. Process errors
. On success, decode returned JSON for presentation in the Portal
. Portal will not store student data

This project involves using an online form whereby the user enters the student's ID to retrieve information from a database on a server and also to add new information (records) to the database.

Can someone explain more clearly what the above means?
geeta_m9Asked:
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Bob BenderCommented:
In a nutshell, RESTful is a web service that you call with parameters (student ID and Domain info).  

It will return you info in JSON format that you are asking for (student details).  With this information, you will format your web page (Portal)

JSON (JavaScript Object Notation) is a simple data-interchange format that is easy to read and write. It is easy for machines to parse and generate.  

Links that you can use to learn from.  If I could, so can you...  it is not difficult.

JSON Headquarters    JSON.ORG  
RESTful API tutorial...    www.restapitutorial.com/  

Bob
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geeta_m9Author Commented:
Thanks.

Geeta
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Ray PaseurCommented:
I only monitor the PHP Zone, so I did not see this question before it was closed.  This article may be helpful:
http://www.experts-exchange.com/Web_Development/Web_Languages-Standards/PHP/A_12239-Introduction-to-Application-Programming-Interfaces.html
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