As shown in Figure 2, the signature is specified as a sequence.
如图2所示，将这个签名指定为一个序列。
For example, you might create a sequence as shown in Listing 3.
例如，您可以创建如清单3所示的序列。
You will see a similar sequence of events as before.
您将看到与前面的事件类似的事件。
When multiple database objects access each other, the sequence is known as a chain.
当多个数据库对象互相访问时，该序列称为链。
When multiple database objects access each other, the sequence is known as a chain.
当多个数据库对象互相访问时，该序列称为链。
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