Optimization Techniques for Queries with Expensive Methods

  title={Optimization Techniques for Queries with Expensive Methods},
  author={Joseph M. Hellerstein},
  journal={ACM Trans. Database Syst.},
Object-relational database management systems allow knowledgeable users to define new data types as well as new methods (operators) for the types. This flexibility produces an attendant complexity, which must be handled in new ways for an object-relational database management system to be efficient. In this article we study techniques for optimizing queries that contain time-consuming methods. The focus of traditional query optimizers has been on the choice of join methods and orders… CONTINUE READING
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