We survey some of the recent results about enumerating the answers to queries over a database. We focus on the case where the enumeration is performed with a constant delay between any two consecutive solutions, after a linear time preprocessing. This cannot be always achieved. It requires restricting either the class of queries or the class of databases. We describe here several scenarios when this is possible.
@InProceedings{segoufin:LIPIcs.STACS.2014.13, author = {Segoufin, Luc}, title = {{A glimpse on constant delay enumeration}}, booktitle = {31st International Symposium on Theoretical Aspects of Computer Science (STACS 2014)}, pages = {13--27}, series = {Leibniz International Proceedings in Informatics (LIPIcs)}, ISBN = {978-3-939897-65-1}, ISSN = {1868-8969}, year = {2014}, volume = {25}, editor = {Mayr, Ernst W. and Portier, Natacha}, publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik}, address = {Dagstuhl, Germany}, URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.STACS.2014.13}, URN = {urn:nbn:de:0030-drops-45001}, doi = {10.4230/LIPIcs.STACS.2014.13}, annote = {Keywords: Enumeration, constant delay, logic} }
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