Query Optimization in an OODBMS

10 years 3 months ago
Query Optimization in an OODBMS
It is clearly crucial for the success of object-oriented databases to find effiĆ cient implementations that improve on the performance of relational sysĆ tems, rather than being powerful in terms of modeling and features, but just too slow to be used. This paper describes the mapping of COCOON to DASDBS, a nested relational database kernel system, as an example OODBMS mapping to a complex storage system. We describe 1) choices for physical designs that make use of the complex storage model and 2) the generation of efficient, set-oriented execution plans for object-oriented database queries, using rule-based query optimization techniques. We use hierarchical clustering and embedded (sets of) object references, and show how to explore them for efficient path traversals expressed in queries inĆ volving complex objects. Prototypes of both, a physical design tool and a query optimizer have been implemented. Preliminary results show feasibilĆ ity, and execution time improvements of an o...
Christian Rich, Marc H. Scholl
Added 09 Aug 2010
Updated 09 Aug 2010
Type Conference
Year 1993
Where BTW
Authors Christian Rich, Marc H. Scholl
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