| dc.contributor.author | Toman, David | |
| dc.contributor.author | Weddell, Grant | |
| dc.date | 2020-09-01 | |
| dc.date.accessioned | 2021-04-23T09:35:30Z | |
| dc.date.available | 2021-04-23T09:35:30Z | |
| dc.date.issued | 2020 | |
| dc.identifier.issn | 1610-1987 | |
| dc.identifier.uri | http://dx.doi.org/10.1007/s13218-020-00666-7 | |
| dc.identifier.uri | http://dl.gi.de/handle/20.500.12116/36299 | |
| dc.description.abstract | A sound inference procedure is presented for removing operations that eliminate duplicates in queries formulated in a bag-algebra. The procedure is shown complete for positive queries over finite databases, and operates by appeal to logical consequence problems for feature-based description logics in which a TBox embeds an object-relational schema. For unions of conjunctive queries in which an embedded schema excludes cover constraints, the procedure runs in PTIME, and in EXPTIME otherwise. | de |
| dc.publisher | Springer | |
| dc.relation.ispartof | KI - Künstliche Intelligenz: Vol. 34, No. 3 | |
| dc.relation.ispartofseries | KI - Künstliche Intelligenz | |
| dc.title | Using Feature-Based Description Logics to avoid Duplicate Elimination in Object-Relational Query Languages | de |
| dc.type | Text/Journal Article | |
| mci.reference.pages | 355-363 | |
| dc.identifier.doi | 10.1007/s13218-020-00666-7 | |
