This article proposes a core query algebra for probabilistic databases. In essence, this core is part of the query languages of most probabilistic database systems proposed so far...
Many of today's CBR systems are passive in nature: they require human users to activate them manually and to provide information about the incoming problem explicitly. In this...
On-Line Analytical Processing (OLAP) systems based on a multidimensional view of data have found widespread use in business applications and are being used increasingly in non-sta...
Logic and databases have gone a long way together since the advent of relational databases. Already the rst basic query languages for relational databases beside relational algebra...
Database systems are a key component behind many of today's computer systems. As a consequence, it is crucial that database systems provide correct and continuous service des...