Schema mapping coverage

Autor: Jan Chomicki, Ning Deng

Publikováno v: Annals of Mathematics and Artificial Intelligence. 89:511-549

In this paper, we introduce and study schema mapping coverage for relational databases. Given a relational schema mapping in the presence of both source dependencies and target dependencies, the coverage problem is to decide and describe which source

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4518bc3eec117e41b547dc63babdc74c
https://doi.org/10.1007/s10472-020-09720-4

Elect: An Inconsistency Handling Approach for Partially Preordered Lightweight Ontologies

Autor: Salem Benferhat, Jan Chomicki, Sihem Belabbes

Publikováno v: Logic Programming and Nonmonotonic Reasoning ISBN: 9783030205270
LPNMR
Logic Programming and Nonmonotonic Reasoning-15th International Conference, LPNMR 2019, Philadelphia, PA, USA, June 3-7, 2019, Proceedings
Lecture Notes in Computer Science
Lecture Notes in Computer Science-Logic Programming and Nonmonotonic Reasoning

We focus on the problem of handling inconsistency in light-weight ontologies. We assume terminological knowledge bases (TBoxes) are specified in DL-Lite and that assertional facts (ABoxes) are partially preordered and may be inconsistent with respect

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65c971246217de0a229ff2ff85459d64
https://doi.org/10.1007/978-3-030-20528-7_16

Abstract Versus Concrete Temporal Query Languages

Autor: Jan Chomicki, David Toman

Publikováno v: Encyclopedia of Database Systems ISBN: 9781489979933

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f944c4ad8f138642aa26819f88470f7
https://doi.org/10.1007/978-1-4614-8265-9_1559

Time Domain

Autor: Angelo Montanari, Jan Chomicki

Publikováno v: Encyclopedia of Database Systems ISBN: 9781489979933

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6197ab0301beae2843fa73ac1d42318
https://doi.org/10.1007/978-1-4614-8265-9_427

Skyline queries, front and back

Autor: Jan Chomicki, Paolo Ciaccia, Niccolo' Meneghetti

Publikováno v: ACM SIGMOD Record. 42:6-18

Skyline queries are a popular way to obtain preferred answers from the database by providing only the orderings of attribute values. The result of a skyline query consists of those input tuples for which there is no input tuple having better or equal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::04c6447d28fbf20d352e19d719f2273e
https://doi.org/10.1145/2536669.2536671