The terms used to represent and describe an area of knowledge is called as ontology. For applications that need to merge information from or search across diverse communities ontologies are critical. Although DTDs , XML and XML Schemas are enough for exchanging data between parties who have beforehand agreed to the definitions. Due to their lack of semantics the machines deny performing this task with new XML vocabularies.
The vision for the future of the web is Semantic web in which explicit meaning is given to information, making
Cascading Style Sheet is a web tool that can be utterly necessary if you want to give a professional, qualitative look to your site. It is recommended by W3C , who manages the standards for the Internet, in order to add style (e.g. fonts, colors, spacing, padding, alignment, etc.) to web documents.
The style sheet is more and more used presently due to its usefulness and its advantages that are far from minor: it mainly allows to dissociate the content and the presentation of web pages, which makes them compatible for various browsers, and also
In a sense, nobody is in charge of the web. The web is an open standard, with no restrictions on who can post content, or what that content should be about. The web belongs to everybody, and so it belongs to nobody. The openness and decentralization of the web is one of its greatest strengths. But it wouldn't work at all without some sort of standard way of encoding the information. That's where the World Wide Web consortium (W3C) comes in.
The W3C is an international, vendor-neutral group that determines the protocols and standards for the web. They
The Web Accessibility Initiative (WAI) is an initiative set-out by the World Wide Web Consortium (W3C) to develop strategies, guidelines, and resources to help make the Web accessible to people with disabilities.
Web accessibility means that visitors with disabilities can still access the web. This includes navigating, understanding, and interpreting the information available. Ensuring website are accessible to all is vital as around 10% of people in the UK have some sort of disability.
Web Content Accessibility Guidelines (WCAG)
The WCAG explain