The POINT approach to represent now in bitemporal databases
نویسندگان
چکیده
منابع مشابه
Database Versions to Represent Bitemporal Databases
We present a new approach to implement an object bitempo-ral database where both valid-time and transaction-time are represented. It is based on the DataBase Version model, which allows an eecient management of object versions. This facilitates the manipulation of past events and allows a straightforward representation of branching evolution in valid-time.
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In bitemporal databases, current facts and transaction states are modelled using a special value to represent the current time (such as a minimum or maximum timestamp or NULL). Previous studies indicate that the choice of value for now (i.e. the current time) significantly influences the efficiency of accessing bitemporal data. This paper introduces a new approach to represent now, in which cur...
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ژورنال
عنوان ژورنال: Journal of Intelligent Information Systems
سال: 2008
ISSN: 0925-9902,1573-7675
DOI: 10.1007/s10844-008-0072-5