Datenbanktheorie
Aus International Center for Computational Logic
Datenbanktheorie
Die Datenbanktheorie beschäftigt sich mit einer Vielzahl von Themen im Bereich des Datenbankmanagement und der Datenbankmanagementsysteme. Ihr theoretisches Fundament stammt aus der Logik, insbesondere aus der Relationalen Algebra und der Prädikatenlogik 1. Stufe. Der Fokus liegt unter anderem auf den Komplexitätseigenschaften und der Ausdrucksstärke von Anfragesprachen. Traditionell beschäftigte sich die Datenbanktheorie mit relationalen Modellen, in denen Datenbanken und Anfragen als relationale Strukturen gesehen werden. Das Auswerten einer Anfrage bedeutet in diesem Modell, dass ein passender Homomorphismus zwischen beiden Strukturen gefunden wird. Es lässt sich allerdings beobachten, dass in den letzten Jahren alternative Modelle zunehmend in den Forschungsfokus rücken. Besonders hervorzuheben ist das graphentheoretische Modell, in dem Strukturen auf binäre Signaturen beschränkt und Anfragen zu regulären Ausdrücken erweitert werden.
Wissenschaftliche Mitarbeiter
Artikel in Fachzeitschriften
Bartosz Bednarczyk, Sebastian Rudolph
How to Tell Easy from Hard: Complexities of Conjunctive Query Entailment in Extensions of ALC
Journal of Artificial Intelligence Research, 78:385–458, November 2023
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Artikel in Tagungsbänden
Lukas Gerlach, David Carral
General Acyclicity and Cyclicity Notions for the Disjunctive Skolem Chase (Extended Technical Report)
In Brian Williams, Yiling Chen, Jennifer Neville, eds., Proceedings of the 37th AAAI Conference on Artificial Intelligence, volume 37 of Proceedings of the AAAI Conference on Artificial Intelligence, 6372-6379, June 2023. AAAI Press
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Lukas Gerlach, David Carral
Do Repeat Yourself: Understanding Sufficient Conditions for Restricted Chase Non-Termination (Technical Report)
In Pierre Marquis,Tran Cao Son,Gabriele Kern-Isberner, eds., Proceedings of the 20th International Conference on Principles of Knowledge Representation and Reasoning (KR 2023), volume 20 of Proceedings of the International Conference on Principles of Knowledge Representation and Reasoning, 301–310, September 2023. International Joint Conferences on Artificial Intelligence Organization
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Lukas Gerlach, David Carral
General Acyclicity and Cyclicity Notions for the Disjunctive Skolem Chase (Extended Abstract)
In Oliver Kutz, Carsten Lutz, Ana Ozaki, eds., Proceedings of the 36th International Workshop on Description Logics (DL 2023) co-located with the 20th International Conference on Principles of Knowledge Representation and Reasoning and the 21st International Workshop on Non-Monotonic Reasoning (KR 2023 and NMR 2023), volume 3515 of CEUR Workshop Proceedings, October 2023. CEUR-WS.org
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Ali Elhalawati, Markus Krötzsch, Stephan Mennicke
An Existential Rule Framework for Computing Why-Provenance On-Demand for Datalog
In Guido Governatori, Anni-Yasmin Turhan, eds., Proceddings of the 6th International Joint Conference on Rules and Reasoning (RuleML+RR 2022), volume 13752 of LNCS, 146--163, 2022. Springer
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Larry González, Alex Ivliev, Markus Krötzsch, Stephan Mennicke
Efficient Dependency Analysis for Rule-Based Ontologies
In Ulrike Sattler, Aidan Hogan, Maria Keet, Valentina Presutti, João Paulo A. Almeida, Hideaki Takeda, Pierre Monnin, Giuseppe Pirrò, Claudia d’Amato, eds., Proc. 21st International Semantic Web Conference (ISWC 2022), volume 13489 of LNCS, 267-283, October 2022. Springer
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Maximilian Marx, Markus Krötzsch
Tuple-Generating Dependencies Capture Complex Values
In Dan Olteanu, Nils Vortmeier, eds., Proceedings of the 25th International Conference on Database Theory (ICDT 2022), volume 220 of LIPIcs, 13:1--13:20, March 2022. Schloss Dagstuhl - Leibniz-Zentrum für Informatik
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Maximilian Marx, Markus Krötzsch
Tuple-Generating Dependencies Capture Complex Values (extended abstract)
In Mario Alviano, Andreas Pieris, eds., Proceedings of the 4th International Workshop on the Resurgence of Datalog in Academia and Industry, volume 3203 of CEUR Workshop Proceedings, 97--103, September 2022. CEUR-WS.org
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Piotr Ostropolski-Nalewaja, Jerzy Marcinkowski, David Carral, Sebastian Rudolph
A Journey to the Frontiers of Query Rewritability
In Leonid Libkin, Pablo Barceló, eds., Proceedings of the 41st Symposium on Principles of Database Systems (PODS'22), 359-367, June 2022. ACM
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Manuel Bodirsky, Thomas Feller, Simon Knäuer, Sebastian Rudolph
On Logics and Homomorphism Closure
Proceedings of the 36th Annual Symposium on Logic in Computer Science (LICS 2021), 1-13, 2021. IEEE
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Emanuel Kieroński, Sebastian Rudolph
Finite Model Theory of the Triguarded Fragment and Related Logics
In IEEE, eds., Proceedings of the 36th Annual Symposium on Logic in Computer Science (LICS 2021), 1-13, 2021
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Bartosz Bednarczyk, Robert Ferens, Piotr Ostropolski-Nalewaja
All-Instances Oblivious Chase Termination is Undecidable for Single-Head Binary TGDs
In Christian Bessiere, eds., Proceedings of the 29th International Joint Conference on Artificial Intelligence and the 17th Pacific Rim International Conference on Artificial Intelligence (IJCAI 2020), ijcai.org, 1719--1725, July 2020. International Joint Conferences on Artificial Intelligence
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