WEB 2.0 :-
It is a second generation of web developement and design that aims to facilitate communications , secure information sharing , interoperability (means ability of diverse systems and organisation to work together ) and collaboration on world wide web . Web 2.o concepts useerd in host services , applications such as social networking sites , blogs, video sharing sites , wikis .
web 2.0 encourages interactivity and interconnectivity. Web 2.0 websites allow user to do more than just retreiving information . These sites provide controll to user so that they can own data and exercise controll over data.
Web 2.0 is often feature a rich , user friendly based on AJAX, Open laszlo , Flex and other rich media.
The Characteristic of web 2.0 are : rich user experience , user participation , dynamic content , metadata(Metadata (meta data, or sometimes metainformation) is “data about other data”, of any sort in any media. metadata would document data about data elements or attributes, (name, size, data type, etc) and data about records or data structures (length, fields, columns, etc) and data about data (where it is located, how it is associated, ownership, etc.)) , web standards and scalability(scalability is a desirable property of a system, a network, or a process, which indicates its ability to either handle growing amounts of work in a graceful manner, or to be readily enlarged).
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