Encyclopedia of Database Systems

2018 Edition
| Editors: Ling Liu, M. Tamer Özsu

QUEL

  • Tore Risch
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-8265-9_1104

Definition

QUEL was the query language used in the original Ingres system from Berkeley University.

Key Points

QUEL was one of the first relational database query languages. It can be seen as a syntactically sugared tuple relational calculus language. The Postgres extension of Ingres originally used an extention of QUEL called PostQUEL, but was later replaced with SQL.

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Information TechnologyUppsala UniversityUppsalaSweden

Section editors and affiliations

  • Tore Risch
    • 1
  1. 1.Dept. of Inf. TechnologyUppsala Univ.UppsalaSweden