operation concurrency的意思|示意

With optimistic concurrency control, the database manager releases the row or page locks immediately after a read operation.

通过使用乐观并发控制，数据库管理器在完成读操作之后可以立即释放行或页锁。

The retry is used in case a concurrency exception does occur in the query table execution and the query table engine needs to retry the claim operation.

重试仅用于查询表执行时出现并发异常且查询表需要重新申明的情况下。

You can also select Use optimistic concurrency to specify that you want the commands to determine whether the data has been modified before an update or delete operation is performed.

还可以选择“使用开放式并发”来指定希望命令确定在执行更新或删除操作前数据是否已经被修改。

Mean a while the underlying principles of three typical kinds of concurrency control, those algorithm based on OPT (Operation Transpose) are studied deeply.

在并发控制设计中，分析比较了各种并发控制算法，尤其是对采用的操作转换算法(OPT)做了重点描述。

This class describes an exception that is thrown when an invalid operation is performed that is not more accurately described by another exception type thrown by the Concurrency Runtime.

此类描述执行无效操作时引发的异常，该类不比并发运行时引发的另一异常类型描述得更为准确。

The basic task of transaction management is that the concurrency of read-write, guarantee the ACID characteristic property and the database operation correctly.

事务管理的基本任务就是有效管理事务读写操作的并发执行，保证事务的ACID特性，保证事务对数据库操作的正确性。