Client server model - created from Mind Map

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API (application programming language)

Websocket

Web CRUD

Representational state transfer (REST)

Comparing JSON (java script object notation) with XML (extensible mark up language)

Thick vs Thin client computing

Http request method

Client server model

a set of protocols between 2 applications that governs how they interact

eg use the twitter API to display tweets on another site

Example of an API

modern application layer

Facilitates a persistent bi-directional communication channel between the sever and client over a single line

Greatly reduce size of the packet due to less header info by ignoring security checks at either end with packets using web socket

Communication between a website and a server

known as full duplex communication

By allowing a connection to stay open whilst sending much smaller packets allows super fast, real time interactive communications

Eg Online Game or collaborative document editing

This leads to less server being required to handel the traffic and reduces data usage bandwith and time in transmission

Acronym for create, retrieve, update and deleate

Allows mapping of basic SQL and HTTP commands to CRUD

Used for online database access for tasks like calendars and seat booking

connecting a database to a browser with HTTP request methods

Style of system design that makes use of HTTP request methods to interact with online databases via a web sever

Client requires no knowledge of the the server will fulfill the request or how the data is storeded

Allows the server and client applications to be modified and developed seperatley

Advantages of JSOM over XML

These are way of transferring data from a database server to a web application

Easier for humans to read

More Compact

Easier to create simple syntax

Quicker for computers to parse

HOWEVER XML is more flexible in terms of data types and structure

The thickness of a client computer is the level of processing and storage that it does over the server it is connected to

Dumb terminal when it is thinnest needing little power and no storage

Most of the time HTTP only requires GET and POST commands but can also use POST and DELETE

Servers

A client sends a request to a server and the server sends a response with the data requested or an errot

file

Email

FTP

Proxy

DHCP

Print

Database