The question whether a given set of views, defined by queries, can be used to answer another query, arises in several contexts such as query optimization, data integration and se...
In order to create, share and improve knowledge on business processes, humans need a common, readable and preferably visual notation. So far, a lot of effort has been put into vis...
Queries in object-oriented datab;Lqcs are formulated against a class and retrieve instnnccls of the class sat,isfying a certain predicate on the att,riblltes of the class. The pre...
More and more integration systems use ontologies to solve the problem of semantic heterogeneities between autonomous databases. To automate the integration process, a number of the...
The development process of hypermedia applications involves a variety of users with different levels of knowledge and skills. In order to get a good communication among participa...