Security refinements such as record-level locking.
安全改进，比如记录级别的锁定。
Locking escalation to page-level or table-level locking.
从页面级锁升级到表级锁。
The first thing every contestant needed to do was change every table to row-level locking.
每位参赛者需要做的第一件事是将每个表更改为行级别锁定。
During an export operation, row-level locking is applied to the exporting table, which means that only one lock is held at a time.
在导出操作期间，行级别锁定应用于导出表(exportingtable)，这意味着一次只持有一个锁。
WebSphere Process Server accesses its databases in multiple concurrent threads and USES row-level locking to ensure data consistency during its transactions.
WebSphereProcessServer通过多个并发线程访问其数据库，并使用行级锁定来确保其事务期间的数据一致性。
Allowing or disallowing row-level locking affects database performance.
允许或禁用行级锁定会影响数据库性能。
The header is used to link together consecutive records, and also in row-level locking.
这个头是用来连接连续的记录，也用于行级锁。
Some databases (such as SQL Server) allow you to disable the page-level locking in hopes that it won't escalate from a row-level lock to a table-level lock.
一些数据库(比如sqlServer)允许您禁用页面级锁，以期它不会从行级锁切换到表级锁。
Tables created by Informix default to page-level locking, so when two or more users attempt to update a row on the same page, at least one will get a lock error.
Informix创建的表默认执行了页面级锁定，所以当两个或更多用户尝试更新同一页面中的一行时，至少一个用户将获得锁定错误。
To determine which tables in a database have page-level locking and need to be modified to row-level locking, I use a helpful SQL script: genlockmod.sql (see Listing 1).
为了确定数据库中的哪些表具有页面级锁定以及需要修改为行级别锁定，我使用了一段sql脚本：genlockmod . sql(参见清单1)。
This script will read the Informix system tables, find out which tables have page-level locking, and then generate another SQL script to change those tables to row-level locking.
此脚本将读取Informix系统表，找出哪些表具有页面级锁定，然后生成另一段sql脚本来将这些表更改为行级别锁定。
This access method is unusual in that it provides record level locking. This can provide beneficial performance improvements in applications requiring concurrent access to the queue.
这种访问方式与众不同处在于他提供记录级别的锁。当程序需要并发的访问队列时，这一点可以提高性能。
At a lower level, locking overhead is much lower on a single core than on a dual core processor.
在更低级的层面上，单核系统上锁的开销远远低于双核处理器。
At a lower level, locking overhead is much lower on a single core than on a dual core processor.
在更低级的层面上，单核系统上锁的开销远远低于双核处理器。
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