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2010
ACM

Incremental query evaluation in a ring of databases

9 years 6 months ago
Incremental query evaluation in a ring of databases
This paper approaches the incremental view maintenance problem from an algebraic perspective. We construct a ring of databases and use it as the foundation of the design of a query calculus that allows to express powerful aggregate queries. The query calculus inherits key properties of the ring, such as having a normal form of polynomials and being closed under computing inverses and delta queries. The k-th delta of a polynomial query of degree k without nesting is purely a function of the update, not of the database. This gives rise to a method of eliminating expensive query operators such as joins from programs that perform incremental view maintenance. The main result is that, for non-nested queries, each individual aggregate value can be incrementally maintained using a constant amount of work. This is not possible for nonincremental evaluation. Categories and Subject Descriptors
Christoph Koch
Added 10 Jul 2010
Updated 10 Jul 2010
Type Conference
Year 2010
Where PODS
Authors Christoph Koch
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