A possible world approach to uncertain relational data

Keijzer de, Ander and Keulen van, Maurice (2004) A possible world approach to uncertain relational data. In: 15th International Workshop on Database and Expert Systems Applications, 30 Aug.-3 Sept. 2004, Zaragoza, Spain.

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Abstract:	Data exchange between embedded systems and other small or large computing device increases. Since data in different data sources may refer to the same real world objects, data cannot simply be merged. Furthermore, in many situations, conflicts in data about the same real world objects need to be resolved without interference from a user. We report on an attempt to make a RDBMS probabilistic, i.e., data in a relation represents all possible views on the real world, in order to achieve unattended data integration. We define a probabilistic relational data model and review standard SQL query primitives in the light of probabilistic data. It appears that thinking in terms of 'possible worlds' is powerful in determining the proper semantics of these query primitives.
Item Type:	Conference or Workshop Item
Copyright:	©2004 IEEE
Faculty:	Science and Technology (TNW) Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:	Databases (DB)
Link to this item:	http://purl.utwente.nl/publications/49173
Official URL:	http://dx.doi.org/10.1109/DEXA.2004.1333596
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