Using Semiouterjoins to Process Queries in Multidatabase Systems
Summary: Use semiouterjoins to optimize queries over multidatabase views defined by outer-joins and aggregates, addressing environments where selections/projections are as costly as joins. Provide linear-time optimizers for selection/projection and heuristics extending to joins and conjunctive queries. (summarized by gpt-5-mini on Feb 09 2026)
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Authors
- 1. Hai-Yann Hwang
- 2. Umeshwar Dayal
- 3. Mohamed G. Gouda
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Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.
| Rank | Cited Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 8 | Extending the Data Base Relational Model to Capture More Meaning | 1979 | SIGMOD | 0.0015385917 |
| 317 | Distributed Query Processing In A Relational Data Base System | 1978 | SIGMOD | 0.00027980992 |
| 863 | Towards a Sound View Integration Methodology | 1983 | PODS | 0.00015817182 |
| 2,391 | Processing Queries Over Generalization Hierarchies in a Multidatabase System | 1983 | VLDB | 8.9022915e-05 |
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