Märtens, H. ; Rahm, E.

On Parallel Join Processing in Object-Relational Database Systems.

Proc. of BTW01 (Datenbanksysteme für Büro, Technik und Wissenschaft), Oldenburg, March 2001. Springer-Verlag




So far only few performance studies on parallel object-relational database systems are available. In particular, the relative performance of relational vs. reference-based join processing in a parallel environment has not been investigated sufficiently. We present a performance study based on the BUCKY benchmark to compare parallel join processing using reference attributes with relational hash- and merge-join algorithms. In addition, we propose a data allocation scheme especially suited for object hierarchies and set-valued attributes.