And the location of every row is in a fixed location, allowing for techniques such as lock escalation when too many fine-grained locks would otherwise be needed.
并且由于每一行都被存储在固定的位置，使得锁升级这样的技术得以实现，以避免过多细粒度锁。
An example might be at the customer level in a financial system: one coarse grained lock could be to lock all accounts for the customer, another could be to lock all insurance policies.
例如，在财务系统中的客户级别上：一个粗粒度锁会锁定该客户的所有帐户，另一个锁则可锁定全部保险策略。
An example might be at the customer level in a financial system: one coarse grained lock could be to lock all accounts for the customer, another could be to lock all insurance policies.
例如，在财务系统中的客户级别上：一个粗粒度锁会锁定该客户的所有帐户，另一个锁则可锁定全部保险策略。
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