If any ordered item cannot be fulfilled, the procedure rolls back the order entry.
如果有任何订购项没有得到满足，过程将回滚该订单条目。
2
This procedure traces the entry to procedure.
该过程跟踪对应于过程的条目。
3
The procedure for other operations, for example, updating or deleting a blog entry or updating or deleting a blog entry's comment, is quite similar to these three operations.