| J. Chomicki. Temporal Databases. In Proceedings of the 12th ACM Symposium on Principles of Database Systems, pages 1-16, 1993 |
....extensions of languages, such as QBE and SQL. Finally, we evaluate alternative approaches to the implementation of TDL, using as the basis for implementation the LDL system with extended aggregates developed at UCLA. 1 Introduction Extensive research has focused on temporal databases [Tan93] [Cho93] addressed temporal query languages based on logic programs. Sno95] introduced TSQL2, which is a consensus extension to SQL 92. TSQL2 uses a Bi temporal Conceptual Data Model (BCDM) Jen94] With respect to interval based models, TSQL2 presents the advantage that it does not require explicit ....
J. Chomicki. Temporal Databases. In Proceedings of the 12th ACM Symposium on Principles of Database Systems, pages 1-16, 1993
....4 intersection predicates can express all topological queries definable in that language. This is related in spirit to what is done in temporal databases, where languages with temporal predicates are measured against temporal first order logic that explicitly manipulates temporal variables (see [K68, C93, AHB95]) The first order closure we use is effective on inputs which are semi algebraic regions, and has data complexity NC . This stands in contrast to the complete language. Previous formal work on query languages for spatial data considers logic languages in which the database is a collection of ....
J. Chomicki. Temporal databases. In Proc. ACM SIGACT-SIGMOD-SIGART Symp. on Principles of Database Systems, 1993. Tutorial notes.
....Properties that must be maintained by the execution of processes are naturally expressed as temporal constraints. Other applications include telecommunication systems [GT94] medical information systems, geographical [AO93] statistical and scientific databases [Mic90] Temporal databases [Cho93] Tan93] and their extensions, referred to as knowledge bases, Sri88] CI88] Org93] BCW93] Ple93a] Orc95] need robust mechanisms for ensuring that time dependent properties do not become violated due to the evolution of the knowledge base or the passage of time. The properties that ....
.... almost exclusively adopted a relational model [Kun85b] LS87] Cho92a] Cho92b] GL93] SW95a] Work on temporal deductive databases has mainly dealt with the problem of finitely representing infinite temporal properties [CI88] KSW90] and the evaluation of temporal logic programs [AM87] Cho93] BCW93] This thesis constitutes a proposal towards devising efficient methods for enforcing temporal integrity constraints in a structurally object oriented framework and in the presence of temporal deductive rules. To the best of our knowledge, the research reported in [Ple93a] is the first ....
J. Chomicki. Temporal Databases, 1993. Tutorial Notes , PODS'93.
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J. Chomicki. Temporal Databases. In the 12th ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems, Washington (1993).
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