# 产品经理应该如何描述需求，产品经理如何给需求分类

1. 概念

A sequence diagram describes an Interaction by focusing on the sequence of Messages that are exchanged, along with their corresponding Occurrence Specifications on the Lifelines.

2. 构成

3. 窍门

1）工具

２）步骤

３）技巧

• https://developer.ibm.com/zh/
• https://book.51cto.com/art/201003/190167.htm

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