Matches in SemOpenAlex for { <https://semopenalex.org/work/W2129188053> ?p ?o ?g. }
Showing items 1 to 80 of
80
with 100 items per page.
- W2129188053 abstract "This paper investigates algebraic query languages on temporal databases. The data model used is a multidimensional extension of the temporal modules introduced in [WJS95]. In a multidimensional temporal module, every non-temporal fact has a timestamp that is a set of n-ary tuples of time points. A temporal module has a set of timestamped facts and has an associated temporal granularity (or temporal type), and a temporal database is a set of multidimensional temporal modules with possibly different temporal types. Temporal algebras are proposed on this database model. Example queries and results of the paper show that the algebras are rather expressive. The operations of the algebras are organized into two groups: snapshot-wise operations and timestamp operations. Snapshot-wise operations are extensions of the traditional relational algebra operations, while timestamp operations are extensions of first-order mappings from timestamps to timestamps. Multiple temporal types are only dealt with by these timestamp operations. Hierarchies of algebras are defined in terms of the dimensions of the temporal modules in the intermediate results. The symbol TALG k is used to denote all the algebra queries whose input, output and intermediate modules are of dimensions at mostm, n and k, respectively. (Most temporal algebras proposed in the literature are in TALG 1 .) Equivalent hierarchies TCALC m;n k are defined in a calculus query language that is formulated by using a first-order logic with linear order. The addition of aggregation functions into the algebras is also studied. This work was partly supported by the NSF grant IRI-9409769 and also by an ARPA grant, administered by the Office of Naval Research under grant number N0014-92-J-4038." @default.
- W2129188053 created "2016-06-24" @default.
- W2129188053 creator A5004042283 @default.
- W2129188053 date "1995-01-01" @default.
- W2129188053 modified "2023-10-01" @default.
- W2129188053 title "Algebraic query languages on temporal databases with multiple time granularities" @default.
- W2129188053 cites W1532002274 @default.
- W2129188053 cites W1565142245 @default.
- W2129188053 cites W1589223644 @default.
- W2129188053 cites W1594120206 @default.
- W2129188053 cites W1841612980 @default.
- W2129188053 cites W1871606727 @default.
- W2129188053 cites W1979795383 @default.
- W2129188053 cites W1986832527 @default.
- W2129188053 cites W2000393512 @default.
- W2129188053 cites W2023417025 @default.
- W2129188053 cites W2057647741 @default.
- W2129188053 cites W2084749812 @default.
- W2129188053 cites W2123533420 @default.
- W2129188053 cites W2126234604 @default.
- W2129188053 cites W2159036867 @default.
- W2129188053 cites W3121801367 @default.
- W2129188053 cites W3124520529 @default.
- W2129188053 doi "https://doi.org/10.1145/221270.221599" @default.
- W2129188053 hasPublicationYear "1995" @default.
- W2129188053 type Work @default.
- W2129188053 sameAs 2129188053 @default.
- W2129188053 citedByCount "7" @default.
- W2129188053 countsByYear W21291880532012 @default.
- W2129188053 crossrefType "proceedings-article" @default.
- W2129188053 hasAuthorship W2129188053A5004042283 @default.
- W2129188053 hasConcept C12439846 @default.
- W2129188053 hasConcept C134306372 @default.
- W2129188053 hasConcept C157692150 @default.
- W2129188053 hasConcept C164120249 @default.
- W2129188053 hasConcept C192028432 @default.
- W2129188053 hasConcept C194222762 @default.
- W2129188053 hasConcept C199360897 @default.
- W2129188053 hasConcept C23123220 @default.
- W2129188053 hasConcept C33923547 @default.
- W2129188053 hasConcept C41008148 @default.
- W2129188053 hasConcept C5655090 @default.
- W2129188053 hasConcept C77088390 @default.
- W2129188053 hasConcept C77277458 @default.
- W2129188053 hasConcept C80444323 @default.
- W2129188053 hasConcept C9376300 @default.
- W2129188053 hasConcept C97854310 @default.
- W2129188053 hasConceptScore W2129188053C12439846 @default.
- W2129188053 hasConceptScore W2129188053C134306372 @default.
- W2129188053 hasConceptScore W2129188053C157692150 @default.
- W2129188053 hasConceptScore W2129188053C164120249 @default.
- W2129188053 hasConceptScore W2129188053C192028432 @default.
- W2129188053 hasConceptScore W2129188053C194222762 @default.
- W2129188053 hasConceptScore W2129188053C199360897 @default.
- W2129188053 hasConceptScore W2129188053C23123220 @default.
- W2129188053 hasConceptScore W2129188053C33923547 @default.
- W2129188053 hasConceptScore W2129188053C41008148 @default.
- W2129188053 hasConceptScore W2129188053C5655090 @default.
- W2129188053 hasConceptScore W2129188053C77088390 @default.
- W2129188053 hasConceptScore W2129188053C77277458 @default.
- W2129188053 hasConceptScore W2129188053C80444323 @default.
- W2129188053 hasConceptScore W2129188053C9376300 @default.
- W2129188053 hasConceptScore W2129188053C97854310 @default.
- W2129188053 hasLocation W21291880531 @default.
- W2129188053 hasOpenAccess W2129188053 @default.
- W2129188053 hasPrimaryLocation W21291880531 @default.
- W2129188053 hasRelatedWork W2356335648 @default.
- W2129188053 hasRelatedWork W2363027842 @default.
- W2129188053 hasRelatedWork W2388669825 @default.
- W2129188053 hasRelatedWork W2545191987 @default.
- W2129188053 hasRelatedWork W3081572596 @default.
- W2129188053 hasRelatedWork W4381740310 @default.
- W2129188053 hasRelatedWork W750475535 @default.
- W2129188053 hasRelatedWork W988193086 @default.
- W2129188053 hasRelatedWork W2098306546 @default.
- W2129188053 hasRelatedWork W2572349046 @default.
- W2129188053 isParatext "false" @default.
- W2129188053 isRetracted "false" @default.
- W2129188053 magId "2129188053" @default.
- W2129188053 workType "article" @default.