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Issue No. 05 - October (1992 vol. 4)
ISSN: 1041-4347
pp: 487-502
<p>It is often desirable to represent in a database, entities whose properties cannot be deterministically classified. The authors develop a data model that includes probabilities associated with the values of the attributes. The notion of missing probabilities is introduced for partially specified probability distributions. This model offers a richer descriptive language allowing the database to more accurately reflect the uncertain real world. Probabilistic analogs to the basic relational operators are defined and their correctness is studied. A set of operators that have no counterpart in conventional relational systems is presented.</p>
probabilistic data management; database representation; data model; missing probabilities; partially specified probability distributions; descriptive language; relational operators; database theory; relational algebra; relational databases

H. Garcia-Molina, D. Barbará and D. Porter, "The Management of Probabilistic Data," in IEEE Transactions on Knowledge & Data Engineering, vol. 4, no. , pp. 487-502, 1992.
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