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3.4 Ontology Languages for the Web 109
• for reciting intellectual property rights of web pages; and
• for conveying the confidentiality preferences of a user as well as the confidential strategies
of a website.
There are some disadvantages to an RDF format:
1. You cannot design your XML in an arbitrary way. The RDF format restricts you on how
you design your XML.
2. An RDF uses namespaces to uniquely identify types (classes), properties, and resources;
thus, you must have a solid understanding of namespaces.
3. In order to use the RDF format, you have to learn the extensive RDF vocabulary ...