TOPAZ: a Cost-Based, Rule-Driven, Multi-Phase Parallelizer

Summary: TOPAZ is a generic, cost-based rule framework for parallel query optimization, exploiting multiple parallelism forms under resource constraints. Its top-down search uses global, multi-phase plan pruning and iterator/data-river abstractions for extensible integration. (summarized by gpt-5.6-luna on Jul 24 2026)

Paper ID: h929da9539bd3bf8a
Venue: VLDB
Year: 1998
Pagerank: 4.9793485e-05
Overall Rank: 13,228 | 11.07%
DOI: -

Incoming Non-self Citations Over Time

No non-self incoming citations found for this paper in this database.

Authors

1. Clara Nippl (Technical University of Munich)
2. Bernhard Mitschang (Technical University of Munich)

BibTeX Citation

@article{nippl_vldb98,
        title = {{TOPAZ: a Cost-Based, Rule-Driven, Multi-Phase Parallelizer}},
        author = {Nippl, Clara and Mitschang, Bernhard},
        journal = {PVLDB},
        series = {{VLDB} '98},
        year = {1998}
}

Incoming Citations (Sorted by Pagerank)

Showing 0 of 0 citing papers.

Rank	Citing Paper	Year	Venue	Pagerank

Outgoing Citations (Sorted by Pagerank)

Showing 19 of 19 cited papers.

Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.

Rank	Cited Paper	Year	Venue	Pagerank
173	Optimizing Queries across Diverse Data Sources	1997	VLDB	0.00026826959
196	Grammar-like Functional Rules for Representing Query Optimization Alternatives	1988	SIGMOD	0.00025626873
321	Measuring the Complexity of Join Enumeration in Query Optimization	1990	VLDB	0.00021088704
446	Query Optimization for Parallel Execution	1992	SIGMOD	0.00018174972
920	Tradeoffs in Processing Complex Join Queries via Hashing in Multiprocessor Database Machines	1990	VLDB	0.00013081835
1,271	Managing Intra-operator Parallelism in Parallel Database Systems	1995	VLDB	0.00011252507
2,136	Optimization of Multi-Way Join Queries for Parallel Execution	1991	VLDB	8.9789503e-05
2,266	Parallel evaluation of multi-join queries	1995	SIGMOD	8.7229053e-05
2,626	On the Effectiveness of Optimization Search Strategies for Parallel Execution Spaces	1993	VLDB	8.2068909e-05
2,660	The Complexity of Transformation-Based Join Enumeration	1997	VLDB	8.1611913e-05
2,897	Dynamic Load Balancing in Hierarchical Parallel Database Systems	1996	VLDB	7.8854343e-05
3,084	On Parallel Processing of Aggregate and Scalar Functions in Object-Relational DBMS	1998	SIGMOD	7.6630061e-05
3,091	Parallel Query Scheduling and Optimization with Time- and Space-Shared Resources	1997	VLDB	7.6578995e-05
3,299	On Optimal Processor Allocation To Support Pipelined Hash Joins	1993	SIGMOD	7.4438903e-05
3,572	Multi-Join Optimization for Symmetric Multiprocessors	1993	VLDB	7.1966777e-05
3,849	EROC: A Toolkit for Building NEATO Query Optimizers	1996	VLDB	6.9810881e-05
5,732	The Query Optimizer in Tandem’s new ServerWare SQL Product	1996	VLDB	6.0140931e-05
5,735	Efficient and Accurate Cost Models for Parallel Query Optimization	1996	PODS	6.0137475e-05
9,973	A Plan-Operator Concept for Client-Based Knowledge Processing	1993	VLDB	5.1038322e-05

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