Abstract
We present QBF (Query Broker Framework), a query evaluation framework that facilitates reuse and design of flexible query processors. QBF integrates existing optimization and execution mechanisms in a uniform way. It allows the use of multiple mechanisms to efficiently and adaptively evaluate queries according to application requirements. The smallest query evaluation unit built from QBF is called a Query Broker. Query brokers can be organized in hierarchies for evaluating queries. The paper describes the QBF components and the way they interact. It also introduces one implementation of these components so as illustrating query processing strategies supported by QBF and their use.
This work is part of the MEDIAGRID Project, supported by the french ACI Grid program.
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Collet, C., Vu, TT. (2004). QBF: A Query Broker Framework for Adaptable Query Evaluation. In: Christiansen, H., Hacid, MS., Andreasen, T., Larsen, H.L. (eds) Flexible Query Answering Systems. FQAS 2004. Lecture Notes in Computer Science(), vol 3055. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-25957-2_29
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DOI: https://doi.org/10.1007/978-3-540-25957-2_29
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