专业释义英英释义
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查询计划 - 引用次数：25
It uses the equivalent translation formulas to translate a UMQA plan, making the query plan after optimization accordant with the above placement theory as much as possible.
设计了UMQA查询优化算法,它应用等价代数变换规则实现对UMQA查询计划的等价变换,使优化后的查询计划尽可能遵循一般性优化策略。
参考来源 - 多媒体查询语言及其查询处理方法研究 -
查询计划 - 引用次数：1 参考来源 - 关系代数与SQL查询优化的研究 Research on relational algebra and SQL query optimization
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Query plan
- abstract: A query plan (or query execution plan) is an ordered set of steps used to access data in a SQL relational database management system. This is a specific case of the relational model concept of access plans.
以上来源于: WordNet
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