A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2011; you can also visit the original URL.
The file type is application/pdf
.
Valid-Time Indeterminacy in Temporal Relational Databases: A Family of Data Models
2010
2010 17th International Symposium on Temporal Representation and Reasoning
Valid-time indeterminacy concerns not knowing exactly when a fact holds in the modeled reality. In this paper, we first propose a reference approach (data model and algebra) in which all possible temporal scenarios induced by valid-time indeterminacy can be extensionally modeled. We then specify a family of sixteen more compact representational data models. We demonstrate their correctness with respect to the reference approach and analyze several properties, including their data expressiveness
doi:10.1109/time.2010.15
dblp:conf/time/AnselmaTS10
fatcat:cmdbu6vsrneehh2ip65zs3k4dy