I'm new to web development. Reading the Facebook Graph API documentation, I found it quite interesting to use a unique URL for data query and Json for sending the data.
My question is: what's the name of this technology? I have worked with RPC and RMI in C and Java but this one is new to me. I want to learn more about it.
It is called REST or at least it is perceived as such. Traditional REST differs a lot - the facebook API is actually an RPC-over-HTTP API, but such APIs are now commonly called RESTful, although they are not, by definition.