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RELATIONAL DATABASE SYSTEM THAT USES REAL-TIME STATISTICS FOR SELECTION OF PHYSICAL OPERATORS
RELATIONAL DATABASE SYSTEM THAT USES REAL-TIME STATISTICS FOR SELECTION OF PHYSICAL OPERATORS
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机译:使用实时统计信息选择物理操作员的关系数据库系统
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摘要
A relational database system may include a query optimizer and a query execution engine. The query optimizer may be configured to receive a query from a query-generating entity and to determine a sequence of operations for executing the query. The query execution engine may use real-time statistics to select physical operators for performing the sequence of operations.
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