Tuple relational calculus

Known as: Calculus (disambiguation), Relational, Tuple calculus

Tuple calculus is a calculus that was introduced by Edgar F. Codd as part of the relational model, in order to provide a declarative database-query…

Papers overview

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2015

The tuple relational calculus has been based on the classical predicate logics. Databases are however not exactly representable…

2015

This paper presents our work on adapting and extending natural language interface (NLI) to database technology to support the…

2011

RESUMEN En este trabajo trataremos el problema del diseno del “Modelo Inteligente para Sistemas de Bases de Datos Distribuidas…

2009

The system StreamAPAS and its declarative query language allows users to define temporal data analysis. This paper addresses the…

2008

Standard SQL is insufficiently expressive for representing many access control policies that are needed in practice. Nevertheless…

2004

This paper introduces the STEP system for natural language access to relational databases. In STEP the administrator couples…

2000

A paraconsistent database is one in which information may be incomplete and/or inconsistent. A data model that does not attempt…

1992

1991

1990

This note presents a translation of a subset of the relational query language SQL into the well known tuple calculus. Roughly…