The optimizer is dependent on accurate cardinality estimates to properly compute the cost of each query access plan considered.
优化器凭借精确的基数估计值来准确计算出每一个待定查询访问计划的成本。
Accurate index information and statistics are fundamental to cost-based decisions in the query optimizer.
准确的索引信息和统计信息是查询优化器中基于成本的决策的基础。
Whether it is application services being exposed or a simple generated data query service, the resulting data must be accurate and appropriate to the business context to be of any value.
无论公开的是应用程序服务，还是生成的简单数据查询服务，产生的数据对于业务上下文必须是准确和适当的，这样才能提供数据的价值。
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