This paper deals with the representation and the processing of information about spatial objects with indeterminate location like valleys or dunes (objects subject to vagueness). ...
We show how formal specifications can be integrated into one of the current pragmatic object-oriented software development methods. Jacobson's "Object-Oriented Software ...
Navigating through tree structures is a core operation in tree processing programs. Most notably, XML processing programs intensively use XPath, the path specification language t...
We have developed a system to process database queries over composed data providing web services. The queries are transformed into execution plans containing an operator that invok...
Expressing complex OLAP queries using group-by, aggregation, and joins can be extremely difficult. As a result of this, many alternate ways of expressing such queries have been de...