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                            # 定義關聯

> 譯者：[飛龍](https://github.com/wizardforcel)

> 來源：[Defining Associations](https://github.com/dresende/node-orm2/wiki/Defining-Associations)

關聯是一個或多個[模型之間](3. Defining Models.md)的關系。

關聯的類型：

+ [hasOne（多對一）](4.1 hasOne.md)
+ [hasMany（多對多）](4.2 hasMany.md)
+ [extendsTo（一對一）](4.3 extendsTo.md)
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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