W. Nutt, Y. Sagiv, and S. Shurin, `Deciding equivalences among aggregated queries'. DWQ Deliverable 7.1, 1997. Home/Search Document Not in Database Summary Related Articles Check |
This paper is cited in the following contexts:
Description Logics with Concrete Domains and Aggregation - Baader, Sattler (1998) (21 citations) (Correct)
....are used. Neither are they implied by the undecidability results in [11] the results presented there concern aggregation constraints involving addition as well as rather complex aggregation functions like average and count. The decidability results are also orthogonal to the decidability results [10] for containment of conjunctive queries with aggregation functions in the query head: we have fewer aggregation functions, but allow to use them in a more complex way. The exact connection between our decidable Description Logic CQ#D agg # and conjunctive queries with aggregation functions is a ....
W. Nutt, Y. Sagiv, and S. Shurin, `Deciding equivalences among aggregated queries'. DWQ Deliverable 7.1, 1997.
Description Logics with Concrete Domains and Aggregation - Baader, Sattler (1998) (21 citations) (Correct)
....are used. Neither are they implied by the undecidability results in [11] the results presented there concern aggregation constraints involving addition as well as rather complex aggregation functions like average and count. The decidability results are also orthogonal to the decidability results [10] for containment of conjunctive queries with aggregation functions in the query head: we have fewer aggregation functions, but allow to use them in a more complex way. The exact connection between our decidable Description Logic CQ(D agg ) and conjunctive queries with aggregation functions is a ....
W. Nutt, Y. Sagiv, and S. Shurin. Deciding equivalences among aggregated queries. DWQ Deliverable 7.1, 1997.
Description Logics with Aggregates and Concrete Domains, Part II - Baader, Sattler (1998) (6 citations) (Correct)
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W. Nutt, Y. Sagiv, and S. Shurin. Deciding equivalences among aggregated queries. DWQ Deliverable 7.1, 1997.
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