Heterogeneous Database Query Optimization in DB2 Universal DataJoiner

Summary: Presents DataJoiner’s optimizer for transparent querying across heterogeneous remote databases. Uniquely, its cost model incorporates both remote execution capabilities and optimizer sophistication, while compensating locally for missing functionality such as sorting. (summarized by gpt-5.6-luna on Jul 24 2026)

Paper ID: 8729
Venue: VLDB
Year: 1998
Pagerank: 6.0518777e-05
Overall Rank: 5,882 | 59.65%
DOI: -

Incoming Non-self Citations Over Time

Authors

1. Shivakumar Venkataraman (IBM)
2. Tian Zhang (IBM)

BibTeX Citation

@article{venkataraman_vldb98,
        title = {{Heterogeneous Database Query Optimization in DB2 Universal DataJoiner}},
        author = {Venkataraman, Shivakumar and Zhang, Tian},
        journal = {PVLDB},
        series = {{VLDB} '98},
        pages = {685--696},
        year = {1998}
}

Incoming Citations (Sorted by Pagerank)

Showing 1 of 1 citing papers.

Rank	Citing Paper	Year	Venue	Pagerank
328	An Adaptive Query Execution System for Data Integration*	1999	SIGMOD	0.00021081317

Outgoing Citations (Sorted by Pagerank)

Showing 6 of 6 cited papers.

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

Rank	Cited Paper	Year	Venue	Pagerank
110	Extensible/Rule Based Query Rewrite Optimization in Starburst	1992	SIGMOD	0.0003309592
171	Optimizing Queries across Diverse Data Sources	1997	VLDB	0.00027363924
182	Federated Database Systems for Managing Distributed, Heterogeneous, and Autonomous Databases	1991	VLDB	0.00026367971
457	Don’t Scrap It, Wrap It! A Wrapper Architecture for Legacy Data Sources	1997	VLDB	0.00018120468
1,595	Query Optimization in Heterogeneous DBMS	1992	VLDB	0.00010249433
8,182	The Heterogeneity Problem and Middleware Technology: Experiences with and Performance of Database Gateways	1998	VLDB	5.4718783e-05

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