Frequently, developers adopt a conservative estimation of the maximum size, which may result in a significant waste of memory resources.

开发人员经常采用最大数据尺寸的保守估计，而这样可能导致严重的内存资源浪费。

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Cardinality estimation is a process by which the optimizer USES statistics to determine the size of partial query results after predicates are applied or aggregation is performed.

基数估计是这样一种过程：在应用了谓词或执行了聚集之后，优化器使用统计信息确定部分查询结果的大小。

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But no matter how you slice it, estimation is critical skill and essential to the success of any software development effort of any size or consequence.

但无论如何，估算是项重要的技能，且对任何规模或任何重要程度的任何软件开发投入来说，估算都是成功的关键。

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Klein's estimation was crucial because the council must decide on the size and shape of the operation by Monday, when the U.N. mandate for Croatia expires.

CNN: U.N. could send troops to Slavonia