Hash indexes - PowerPoint PPT Presentation

Determining the Cost of Algebraic Operators

Determining the Cost of Algebraic Operators. Background: Memory, Files, Indexes. Selection. External Sort. Join. Evaluating Individual Operators. Other. Finding Efficient Query Plans. Optimizer Architecture. Cost of Combining Operators. Enumerating Plans. Types of Memory.

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Carnegie Mellon Univ. Dept. of Computer Science 15-415/615 - DB Applications

Carnegie Mellon Univ. Dept. of Computer Science 15-415/615 - DB Applications. C. Faloutsos – A. Pavlo Lecture#14: Implementation of Relational Operations. Last Class. Sorting: External Merge Sort Projection: External Merge Sort Two-Phase Hashing.

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917 views • 90 slides

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