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Introducing the Query Optimizer
2014The query optimizer is one of the building blocks of the SQL engine. Its purpose is to produce efficient execution plans in a timely manner. The time constraint is essential because in most situations it isn’t sensible to spend too much time on the optimization phase. What does “too much time” mean?
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Optimization of Continual Queries
2005Recent advances in the technologies have made it possible to access information from Internet-scale distributed data sources (Florescu, Levy & Mendelzon, 1998). However, finding the right information at the right time is difficult. Update monitoring (Seligman et al., 2000) is a technology that gathers relevant information and forwards it to users ...
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