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Published Articles >> Table of Contents >> Abstract
17th International Conference on Data Engineering (ICDE'01)
p. 0041
A Split Operator for Now-Relative Bitemporal Databases
Mikkel Agesen, Aalborg University
Michael H. Bohlen, Aalborg University
Lasse O. Poulsen, Aalborg University
Kristian Torp, Aalborg University
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DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/ICDE.2001.914812
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Abstract: The timestamps of now-relative bitemporal databases are modeled as growing, shrinking, or rectangular regions. The shape of these regions makes it a challenge to design bitemporal operators that a) are consistent with the point-based interpretation of a temporal database, b) preserve identity of the argument timestamps, c) ensure locality, and d) perform efficiently. We identify the bitemporal split operator as the basic primitive to implement a wide range advanced now-relative bitemporal operations. The bitemporal split operator splits each tuple of a bitemporal argument relation, such that equality and standard nontemporal algorithms can be used to implement the bitemporal counterparts with the aforementioned properties. Both a native database algorithm and an SQL implementation are provided. Our performance results show that the bitemporal split operator outperforms related approaches by orders magnitude and scales well.
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 Additional Information
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Citation:
Mikkel Agesen, Michael H. Bohlen, Lasse O. Poulsen, Kristian Torp,
"A Split Operator for Now-Relative Bitemporal Databases,"
icde,
p. 0041,
17th International Conference on Data Engineering (ICDE'01),
2001
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