Abstract Relational rule learning algorithms are typically designed to construct classification and prediction rules. However, relational rule learning can be adapted also to subgr...
We present a technique for refining the design of relational storage for XML data based on XML key propagation. Three algorithms are presented: one checks whether a given function...
Susan B. Davidson, Wenfei Fan, Carmem S. Hara, Jin...
This paper is concerned with a transformation-based approach to update propagation in an extended version of Codd’s relational algebra which allows for defining derived relatio...
Location information can be used to enhance interaction with mobile devices. While many location systems require instrumentation of the environment, we present a system that allow...
Gerd Kortuem, Christian Kray, Hans-Werner Gellerse...
Modern database applications show a growing demand for efficient and dynamic management of intervals, particularly for temporal and spatial data or for constraint handling. Common...