What question did this study set out to answer?

To introduce TQuel, a specialized temporal query language designed to query time-varying information stored in historical databases.

January 1, 198454 citationsOpen Access

The temporal query language TQuel

RSRichard T. Snodgrass

Key Points

To introduce TQuel, a specialized temporal query language designed to query time-varying information stored in historical databases.
Designed TQuel as a syntactic and semantic superset of Quel, the query language used in the Ingres relational database management system.
Formulated design choices to maintain minimal linguistic and structural deviation from standard Quel constructs.
Established TQuel as a functional temporal query language capable of retrieving enterprise history across time.
Achieved seamless compatibility with existing Quel syntax while adding expressive temporal data manipulation features.

Abstract

Recently, attention has been focussed on historical databases (HDBs), representing an enterprise over time. We have developed a new language, TQuel, to query an HDB. TQuel is a superset of Quel, the query language in the Ingres relational database management system. This paper provides an overview of the language, motivating the various design decisions with the objective that it be a minimal extension, both syntactically and semantically, of Quel.

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Cite This Study

Richard T. Snodgrass (1984) studied this question.

synapsesocial.com/papers/6a0e2455d4969e46f6d08aa8 https://doi.org/10.1145/588039.588041

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January 1, 198454 citationsOpen Access

The temporal query language TQuel

RSRichard T. Snodgrass

Key Points

To introduce TQuel, a specialized temporal query language designed to query time-varying information stored in historical databases.
Designed TQuel as a syntactic and semantic superset of Quel, the query language used in the Ingres relational database management system.
Formulated design choices to maintain minimal linguistic and structural deviation from standard Quel constructs.
Established TQuel as a functional temporal query language capable of retrieving enterprise history across time.
Achieved seamless compatibility with existing Quel syntax while adding expressive temporal data manipulation features.

Abstract

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Cite This Study

Richard T. Snodgrass (1984) studied this question.

synapsesocial.com/papers/6a0e2455d4969e46f6d08aa8 https://doi.org/10.1145/588039.588041

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