Abstract. WebML (Web Modelling Language) is a language for the design of dataintensive Web sites. It is supported by visual tools allowing the definition of the conceptual data or...
One difficulty in the design of XML Schema is the restriction that the content models should be deterministic, i. e., the Unique Particle Attribution (UPA) constraint, which means ...
By means of portals, a company can give each person the information that responds to their specific needs. Nowadays, portals tend to be constructed by means of portlets. So, if we...
In this article we present a method for the design and implementation of Web Applications for the Semantic Web. Based on the "Object Oriented Hypermedia Design Method" a...
Integrity constraints are an essential part of a modern schema definition language. They are useful for semantic specification, update consistency control, query optimization, inf...