Our first major problem is that we are scanning the full bills table every time we want a row out of it and locking every row we read.

我们的第一个主要问题是，当我们想要一行的内容时，我们会扫描整个账单表，并锁定我们读取的每一行。

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This reduces the amount of locking within the database manager and reduces the processing cost of the read.

这样可减少数据库管理器中的锁定量，从而减少线程的处理成本。

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This will reduce the amount of locking that the database manager has to perform and result in better read performance.

这将减少数据库管理器必须执行的锁定量从而提高读的性能。

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