User-Defined Table Operators: Enhancing Extensibility for ORDBMS

Summary: Introduces user-defined table operators: programmable N-ary relational operators in SQL/Embedded SQL, beyond scalar UDFs. Enables pushing complex application logic into ORDBMS servers with parallel, efficient execution and orders-of-magnitude speedups. (summarized by gpt-5.6-luna on Jul 24 2026)

Paper ID: 8784
Venue: VLDB
Year: 1999
Pagerank: 6.5900051e-05
Overall Rank: 4,645 | 68.14%
DOI: -

Incoming Non-self Citations Over Time

Authors

1. Michael Jaedicke (Technical University of Munich)
2. Bernhard Mitschang (University of Stuttgart)

BibTeX Citation

@article{jaedicke_vldb99,
        title = {{User-Defined Table Operators: Enhancing Extensibility for ORDBMS}},
        author = {Jaedicke, Michael and Mitschang, Bernhard},
        journal = {PVLDB},
        series = {{VLDB} '99},
        pages = {494--505},
        year = {1999}
}

Incoming Citations (Sorted by Pagerank)

Showing 4 of 4 citing papers.

Rank	Citing Paper	Year	Venue	Pagerank
1,021	Jaql: A Scripting Language for Large Scale Semistructured Data Analysis	2011	VLDB	0.00012606673
1,264	SQL/MapReduce: A practical approach to self-describing, polymorphic, and parallelizable user-defined functions	2009	VLDB	0.00011416393
2,889	F1 Query: Declarative Querying at Scale	2018	VLDB	7.9935046e-05
5,500	Combi-Operator – Database Support for Data Mining Applications	2003	VLDB	6.1968585e-05

Outgoing Citations (Sorted by Pagerank)

Showing 14 of 14 cited papers.

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

Rank	Cited Paper	Year	Venue	Pagerank
81	Implementation of Integrity Constraints and Views by Query Modification	1975	SIGMOD	0.00036443459
132	Predicate Migration: Optimizing Queries with Expensive Predicates	1993	SIGMOD	0.00030378624
192	Grammar-like Functional Rules for Representing Query Optimization Alternatives	1988	SIGMOD	0.00026028406
268	Extensible Query Processing in Starburst	1989	SIGMOD	0.00022788687
728	Partition Based Spatial-Merge Join	1996	SIGMOD	0.00014542772
801	Query Execution Techniques for Caching Expensive Methods	1996	SIGMOD	0.00013909408
1,859	Integrating SQL Databases with Content-specific Search Engines	1997	VLDB	9.5982801e-05
2,249	A Comparison of Spatial Query Processing Techniques for Native and Parameter Spaces	1990	SIGMOD	8.8700017e-05
2,465	Optimization of Queries with User-defined Predicates	1996	VLDB	8.5428786e-05
2,528	The Case for Enhanced Abstract Data Types	1997	VLDB	8.4620669e-05
3,036	On Parallel Processing of Aggregate and Scalar Functions in Object-Relational DBMS	1998	SIGMOD	7.8287552e-05
5,063	Prospector: A Content-Based Multimedia Server for Massively Parallel Architectures	1996	SIGMOD	6.3797076e-05
7,382	Object-Relational Database Systems: Principles, Products, and Challenges (Tutorial)	1997	SIGMOD	5.6287228e-05
9,152	Second-Order Signature: A Tool for Specifying Data Models, Query Processing, and Optimization	1993	SIGMOD	5.3133028e-05

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