Robustness Against Read Committed for Transaction Templates with Functional Constraints

Brecht Vandevoort, Bas Ketsman, Christoph Koch, Frank Neven

Onderzoeksoutput: Conference paper

5 Citaten (Scopus)


The popular isolation level Multiversion Read Committed (RC) trades some of the strong guarantees of serializability for increased transaction throughput. Sometimes, transaction workloads can be safely executed under RC obtaining serializability at the lower cost of RC. Such workloads are said to be robust against RC. Previous work has yielded a tractable procedure for deciding robustness against RC for workloads generated by transaction programs modeled as transaction templates. An important insight of that work is that, by more accurately modeling transaction programs, we are able to recognize larger sets of workloads as robust. In this work, we increase the modeling power of transaction templates by extending them with functional constraints, which are useful for capturing data dependencies like foreign keys. We show that the incorporation of functional constraints can identify more workloads as robust that otherwise would not be. Even though we establish that the robustness problem becomes undecidable in its most general form, we show that various restrictions on functional constraints lead to decidable and even tractable fragments that can be used to model and test for robustness against RC for realistic scenarios.

Originele taal-2English
Titel25th International Conference on Database Theory, ICDT 2022
RedacteurenDan Olteanu, Nils Vortmeier
UitgeverijSchloss Dagstuhl- Leibniz-Zentrum fur Informatik GmbH, Dagstuhl Publishing
ISBN van elektronische versie9783959772235
StatusPublished - 1 mrt 2022
Evenement25th International Conference on Database Theory - Edinburgh, United Kingdom
Duur: 29 mrt 20221 apr 2022

Publicatie series

NaamLeibniz International Proceedings in Informatics, LIPIcs
ISSN van geprinte versie1868-8969


Conference25th International Conference on Database Theory
Verkorte titelICDT 2022
Land/RegioUnited Kingdom


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