Encyclopedia of Database Systems

Living Edition
| Editors: Ling Liu, M. Tamer Özsu

Query Translation

Living reference work entry
DOI: https://doi.org/10.1007/978-1-4899-7993-3_1070-2

Synonyms

Definition

Given a source query Qs over a source schema and a target query template over a target schema, query translation generates a query that is semantically closest to the source query and syntactically valid to the target schema. The semantically closest is measured by a closeness metrics, typically defined by precision and/or recall of a translated query Versus a source query over a database content. Syntax validness indicates the answerability of a translated query over the target schema. Therefore, the goal of query translation is to find a query that is answerable over the target schema and meanwhile retrieves the closest set of results as the source query would retrieve over a database content.

Historical Background

Query translation is an essential problem in any data integration system and has been studied extensively in the database area. Since a data integration system needs to integrate many different sources, query translation...

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Copyright information

© Springer Science+Business Media LLC 2016

Authors and Affiliations

  1. 1.University of Illinois at Urbana-ChampaignUrbanaUSA