This paper studies aggregate search in transaction time databases. Specifically, each object in such a database can be modeled as a horizontal segment, whose y-projection is its s...
The skyline operator was first proposed in 2001 for retrieving interesting tuples from a dataset. Since then, 100+ skyline-related papers have been published; however, we discove...
Similarity Matrix of Proteins (SIMAP) (http://mips.gsf. 10 de/simap) provides a database based on a precomputed similarity matrix covering the similarity space formed by .4 millio...
Roland Arnold, Thomas Rattei, Patrick Tischler, Mi...
Query containment is the most fundamental relationship between a pair of database queries: a query Q is said to be contained in a query Q if the answer for Q is always a subset of...
The database query optimizer requires the estimation of the query selectivity to find the most efficient access plan. For queries referencing multiple attributes from the same rel...