不同版本的J2EE应用程序组件(例如访问相同外部数据库的实体bean)在修改相同的数据表或数据记录的时候会存在同步问题。
Multiple versions of J2EE application components, such as entity beans that access the same external database, could have synchronization issues while modifying the same table or row.
另一种情况是与成千上万的记录外部应用程序。
Another scenario is an external application with hundreds of thousands of records.
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