# Modern Lower Bound Techniques in Database Theory and Constraint Satisfaction

Marx, Dániel
(2021) Modern Lower Bound Techniques in Database Theory and Constraint Satisfaction.
In: 40th ACM SIGMOD-SIGACT-SIGAI Symposium on Principles of Database System.
Conference: PODS ACM SIGMOD-SIGACT-SIGART Conference on Principles of Database Systems

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Official URL: https://doi.org/10.1145/3452021.3458814

## Abstract

Conditional lower bounds based on \$\textup{P}\neq \textup{NP}\$, the Exponential-Time Hypothesis (ETH), or similar complexity assumptions can provide very useful information about what type of algorithms are likely to be possible. Ideally, such lower bounds would be able to demonstrate that the best known algorithms are essentially optimal and cannot be improved further. In this tutorial, we overview different types of lower bounds, and see how they can be applied to problems in database theory and constraint satisfaction.

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