1.  many-to-many
2.  many-many

• 1. 多对多: many-to-many | many to many | many-many | many
• 2. 建立多对多关系: MN
• 3. 多对多联系: many-to-many relationship | mn

更多释义

• 1.每个多对多的关联映射到唯一的表。
  Each many-to-many association maps to a distinct table.
  dict.yoduao.com
• 2.我们不必苦恼映射多对多的关系。
  We didn't bother mapping this many-to-many relationship.
  dict.yoduao.com
• 3.因此代码块与业务操作之间存在多对多的关系。
  So there is a many-to-many relationship between code blocks and business operations.
  dict.yoduao.com

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