The DOI matches its Crossref record; 37 of the 37 references it cites were found in a registry or an index.
The temporal query language TQuel
Abstract
Recently, attention has been focused on temporal databases , representing an enterprise over time. We have developed a new language, Tquel , to query a temporal database. TQuel was designed to be a minimal extension, both syntactically and semantically, of Quel, the query language in the Ingres relational database management system. This paper discusses the language informally, then provides a tuple relational calculus semantics for the TQuel statements that differ from their Quel counterparts, including the modification statements. The three additional temporal constructs defined in Tquel are shown to be direct semantic analogues of Quel's where clause and target list. We also discuss reducibility of the semantics to Quel's semantics when applied to a static database. TQuel is compared with ten other query languages supporting time.
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Cites
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“b (3+4) ] (Ba)(3b)(S)(A(a) A B(b) A C(c) A u[l] = a[l] A u[2] = b[l] A u[3] = c[l] A u[4] = Last(a[3], b[3]) A u[5] = First(a[4], b[4]) A Before(u[4], u[5]) A u[6] = 12346 A u[7] = 0 Aa[2]=b[2]Ab[2]=c[2] A UWore(h~(aM, bPl), cL31) V JWore(cWl, at31)) A Before(1009, a[6]) A Before(a[5], 1019) A Before(1009, b[6]) A Bef…”
A relational model of data for large shared data banks
Codd, E. F. (1970) · Communications of the ACM · doi:10.1145/362384.362685 · Cited by 5,547
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Bundy, A. (2007) · International Joint Conference on Artificial Intelligence · Cited by 2,761
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A Temporal Logic for Reasoning about Processes and Plans*
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Cited by
Telos: representing knowledge about information systems
Mylopoulos, J., Borgida, A., Jarke, M., & Koubarakis, M. (1990) · ACM Transactions on Information Systems · doi:10.1145/102675.102676 · Cited by 786
Synchronization and storage models for multimedia objects
Little, T. D. C., & Ghafoor, A. (1990) · IEEE Journal on Selected Areas in Communications · doi:10.1109/49.53017 · Cited by 532
Discovering relative motion patterns in groups of moving point objects
Laube, P., Imfeld, S., & Weibel, R. (2005) · International Journal of Geographical Information Science · doi:10.1080/13658810500105572 · Cited by 275
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Self-citation
Metadata
- Authors
- Snodgrass, R.
- Venue
- ACM Transactions on Database Systems
- Published
- 1987-06
- Volume
- 12
- Issue
- 2
- Pages
- 247-298
- ISSN
- 0362-5915 (ISSN-L)
- 1557-4644
- OpenAlex
- W2067481201
- Cited by
- 607
- References
- 37
- FWCI
- 28.41
- Type
- journal article
- Language
- en
- Open access
- closed
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