Integrating data sources is a general problem in many scenarios. The main problem is the heterogeneity between data sources which were created and developed separately. In the lit...
A database system contains base data items which record and model a physical, real world environment. For better decision support, base data items are summarized and correlated to...
Abstract. During the last years, a number of formal specification languages for knowledge-based systems have been developed. Characteristic for knowledge-based systems are a comple...
Pascal van Eck, Joeri Engelfriet, Dieter Fensel, F...
The generation of hypermedia (or Web-based) presentations plays an important role in information management on the World Wide Web. In applications for Web modeling and querying, in...
With the substantial change of declarative query languages from plain SQL to the so-called \object SQLs", in particular OQL, there has surprisingly been not much change in the...