| 摘要 |
Systems and methods for storing and accessing data. A query language statement may request a data set from the system. Data sets may be composed from the query language statement and other algebraic relations from prior query language statements may be provided in a relation store. The store of algebraic relations may be accumulated over time. The composed algebraic relations and stored algebraic relations may be used to provide the requested data set. Alternative collections of algebraic relations may be generated and evaluated to determine an optimized collection of algebraic relations to use in providing the requested data set. The optimization may be performed using the algebraic relations rather than retrieving underlying data sets from storage. As a result, optimization may be performed at processor speeds to minimize the amount of time required for data to be retrieved from slower storage.
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