Water storage rate and water drive index are two important targets for evaluating the effect of water injection.
存水率和水驱指数是综合评价注水开发效果的两项重要指标。
DB2 USES buffer pools to cache the table and index data as they are being read or written to the hard disk drive.
当从硬盘驱动器读写表和索引数据时，DB 2使用缓冲池来缓存它们。
Accurate and complete statistics will help drive good access path advice, and of course the index advisor should not be executed without good statistics.
准确而全面的统计数据能帮助生成良好的访问路径建议，当然，索引advisor工具执行时要有准确的统计数据。
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