License: Creative Commons Attribution 4.0 International license (CC BY 4.0)
When quoting this document, please refer to the following
DOI: 10.4230/LIPIcs.ICDT.2022.13
URN: urn:nbn:de:0030-drops-158876
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Marx, Maximilian ; Krötzsch, Markus

Tuple-Generating Dependencies Capture Complex Values

LIPIcs-ICDT-2022-13.pdf (0.8 MB)


We formalise a variant of Datalog that allows complex values constructed by nesting elements of the input database in sets and tuples. We study its complexity and give a translation into sets of tuple-generating dependencies (TGDs) for which the standard chase terminates on any input database. We identify a fragment for which reasoning is tractable. As membership is undecidable for this fragment, we develop decidable sufficient conditions.

BibTeX - Entry

  author =	{Marx, Maximilian and Kr\"{o}tzsch, Markus},
  title =	{{Tuple-Generating Dependencies Capture Complex Values}},
  booktitle =	{25th International Conference on Database Theory (ICDT 2022)},
  pages =	{13:1--13:20},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-223-5},
  ISSN =	{1868-8969},
  year =	{2022},
  volume =	{220},
  editor =	{Olteanu, Dan and Vortmeier, Nils},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{},
  URN =		{urn:nbn:de:0030-drops-158876},
  doi =		{10.4230/LIPIcs.ICDT.2022.13},
  annote =	{Keywords: terminating standard chase, existential rules, Datalog, complexity}

Keywords: terminating standard chase, existential rules, Datalog, complexity
Collection: 25th International Conference on Database Theory (ICDT 2022)
Issue Date: 2022
Date of publication: 19.03.2022
Supplementary Material: Audiovisual (Video of the Presentation):

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