• 1. Attributes From All Objects: 从所有对象得到的属性
• 2. Attributes s From All Objects: 从所有对象得到的属性

• 1.If the facts object contains any join references, then look at each of these join objects and keep track of all attributes from both the left and right sides of these joins.
  如果事实对象包含任何联结引用，那么要查看每个联结对象，记录这些联结左右两边的所有属性。
  dict.yoduao.com
• 2.If Di contains any join references, then look at each of these join objects and keep track of all attributes from both the left and right sides of these joins.
  如果Di包含任何联结引用，那么要查看每个联结对象，记录这些联结左右两边的所有属性。
  dict.yoduao.com

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