Skip to main content

Understanding Queries by Conditional Instances

Publication ,  Conference
Gilad, A; Miao, Z; Roy, S; Yang, J
Published in: Proceedings of the ACM SIGMOD International Conference on Management of Data
June 10, 2022

A powerful way to understand a complex query is by observing how it operates on data instances. However, specific database instances are not ideal for such observations: they often include large amounts of superfluous details that are not only irrelevant to understanding the query but also cause cognitive overload; and one specific database may not be enough. Given a relational query, is it possible to provide a simple and generic "representative'' instance that (1) illustrates how the query can be satisfied, (2) summarizes all specific instances that would satisfy the query in the same way by abstracting away unnecessary details? Furthermore, is it possible to find a collection of such representative instances that together completely characterize all possible ways in which the query can be satisfied? This paper takes initial steps towards answering these questions. We design what these representative instances look like, define what they stand for, and formalize what it means for them to satisfy a query in "all possible ways."We argue that this problem is undecidable for general domain relational calculus queries, and develop practical algorithms for computing a minimum collection of such instances subject to other constraints. We evaluate the efficiency of our approach experimentally, and show its effectiveness in helping users debug relational queries through a user study.

Duke Scholars

Published In

Proceedings of the ACM SIGMOD International Conference on Management of Data

DOI

ISSN

0730-8078

Publication Date

June 10, 2022

Start / End Page

355 / 368
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Gilad, A., Miao, Z., Roy, S., & Yang, J. (2022). Understanding Queries by Conditional Instances. In Proceedings of the ACM SIGMOD International Conference on Management of Data (pp. 355–368). https://doi.org/10.1145/3514221.3517898
Gilad, A., Z. Miao, S. Roy, and J. Yang. “Understanding Queries by Conditional Instances.” In Proceedings of the ACM SIGMOD International Conference on Management of Data, 355–68, 2022. https://doi.org/10.1145/3514221.3517898.
Gilad A, Miao Z, Roy S, Yang J. Understanding Queries by Conditional Instances. In: Proceedings of the ACM SIGMOD International Conference on Management of Data. 2022. p. 355–68.
Gilad, A., et al. “Understanding Queries by Conditional Instances.” Proceedings of the ACM SIGMOD International Conference on Management of Data, 2022, pp. 355–68. Scopus, doi:10.1145/3514221.3517898.
Gilad A, Miao Z, Roy S, Yang J. Understanding Queries by Conditional Instances. Proceedings of the ACM SIGMOD International Conference on Management of Data. 2022. p. 355–368.

Published In

Proceedings of the ACM SIGMOD International Conference on Management of Data

DOI

ISSN

0730-8078

Publication Date

June 10, 2022

Start / End Page

355 / 368