QUERYING LOGICAL DATABASES: Preliminary Report
Summary: Analyzes complexity of query evaluation in Reiter's closed-world logical databases with unknown values, showing first-order queries become co-NP-complete (vs. LOGSPACE for physical DBs). Proposes an approximation algorithm to implement logical databases on top of standard DBMSs. (summarized by gpt-5-mini on Feb 09 2026)
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| Rank | Cited Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 528 | Database Relations with Null Values (Extended Abstract) | 1982 | PODS | 0.0002084153 |
| 556 | On the Semantics of Updates in Databases | 1983 | PODS | 0.00020249905 |
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