Abstract
In this paper we introduce the problem of managing uncertainty on the schema of a relational database. We formalize this problem using a possible world semantics, identify the challenges posed by the co-existence of many alternative schemata, and define some basic properties of a system with uncertain schemata. Finally, we describe a query rewriting system, i.e., the technique used to produce valid queries for each alternative schema, and study its properties.
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Magnani, M., Montesi, D. (2009). Towards Relational Schema Uncertainty. In: Godo, L., Pugliese, A. (eds) Scalable Uncertainty Management. SUM 2009. Lecture Notes in Computer Science(), vol 5785. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-04388-8_13
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DOI: https://doi.org/10.1007/978-3-642-04388-8_13
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-04387-1
Online ISBN: 978-3-642-04388-8
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