If the corresponding spatial row does not exist, there is simply nothing to delete; this condition is not an exception that causes a transaction to roll back.
如果对应的空间行不存在，那么就不删除任何东西；这种情况不是异常，不会导致事务回退。
Listing 9: Disable the transaction log archive mode, and delete all the archived transaction log files.
清单9：禁用事务日志归档模式，并删除所有归档的事务日志文件。
Listing 7: Perform a backup, enable the transaction log archive mode, and delete archived transaction logs before this backup.
清单7：执行备份，启用事务日志归档模式，并删除这次备份之前归档的事务日志。
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