Heterogeneous Database Query Optimization in DB2 Universal DataJoiner
Summary: Describes DataJoiner (DJ), a heterogeneous DB exposing remote tables as local nicknames in a single image. The DJ optimizer uses a cross-domain cost model accounting for remote optimizer capabilities and can compensate for missing functions (e.g., sorting). (summarized by gpt-5-nano on Feb 09 2026)
Incoming Non-self Citations Over Time
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Incoming Citations (Sorted by Pagerank)
Showing 1 of 1 citing papers.
| Rank | Citing Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 394 | An Adaptive Query Execution System for Data Integration* | 1999 | SIGMOD | 0.00024460855 |
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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 |
|---|---|---|---|---|
| 106 | Extensible/Rule Based Query Rewrite Optimization in Starburst | 1992 | SIGMOD | 0.00048400734 |
| 151 | Optimizing Queries across Diverse Data Sources | 1997 | VLDB | 0.00041016476 |
| 165 | Federated Database Systems for Managing Distributed, Heterogeneous, and Autonomous Databases | 1991 | VLDB | 0.00039502525 |
| 346 | Don't Scrap It, Wrap It! A Wrapper Architecture for Legacy Data Sources | 1997 | VLDB | 0.00026656272 |
| 1,839 | Query Optimization in Heterogeneous DBMS | 1992 | VLDB | 0.00010349298 |
| 7,764 | The Heterogeneity Problem and Middleware Technology: Experiences with and Performance of Database Gateways | 1998 | VLDB | 4.6573436e-05 |
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Semantically Similar Papers
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| 11,890 | Let's Rethink Join Optimization in Distributed Systems | 2015 | CIDR | 4.1945683e-05 |
| 8,784 | SQL Query Optimization: Reordering for a General Class of Queries | 1996 | SIGMOD | 4.4527694e-05 |
| 2,153 | Join Queries with External Text Sources: Execution and Optimization Techniques | 1995 | SIGMOD | 9.4231298e-05 |
| 2,275 | Adopting Worst-Case Optimal Joins in Relational Database Systems | 2020 | VLDB | 9.1262202e-05 |
| 2,044 | Optimization of Multi-Way Join Queries for Parallel Execution | 1991 | VLDB | 9.6953608e-05 |
| 13,032 | Using Semiouterjoins to Process Queries in Multidatabase Systems | 1984 | PODS | 4.1945683e-05 |
| 1,839 | Query Optimization in Heterogeneous DBMS | 1992 | VLDB | 0.00010349298 |