The Volcano optimizer generator: Extensibility and efficient search (1993)
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| Venue: | ICDE |
| Citations: | 169 - 1 self |
BibTeX
@INPROCEEDINGS{Graefe93thevolcano,
author = {Goetz Graefe},
title = {The Volcano optimizer generator: Extensibility and efficient search},
booktitle = {ICDE},
year = {1993},
pages = {209--218},
publisher = {}
}
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Abstract
Emerging database application domains demand not only new functionality but also high performance. To satisfy these two requirements, the Volcano project provides efficient, extensible tools for query and request processing, particularly for object-oriented and scientific database systems. One of these tools is a new optimizer generator. Data model, logical algebra, physical algebra, and optimi-zation rules are translated by the optimizer generalor into optimizer source code. Compared with our earlier EX-ODUS optimizer generator prototype, the search engine is more extensible and powerful; it provides effective support for non-trivial cost models and for physical properties such as sort order. At the same time, it is much more efficient as it combines dynamic programming, which until now had been used only for relational select-project-join optimization, with goal-directed search and branch-and-bound pruning. Compared with other rule-based optimi-zation systems, it provides complete data model indepen-dence and more natural extensibility. 1.
