The update operation implementation must make a qualified update to the database record such as, "updaterecord.".. where the the revision counter equals...
更新操作实现必须对数据库记录进行限定的更新操作,如“如果修订计数器等于…则更新记录…”。
2
We add a trigger to database so that every update to a record in the table increments the revision counter.
向数据库添加触发器,以便对该表中的记录的每个更新都会导致修订计数器递增。
3
To carry this task out reliably, the sender needs to send the message and update its record of the transmission in a single transaction.