Composite Keys
組合鍵
Entity
(entities-with-composite-keys)[https://docs.abp.io/en/abp/1.0/Entities#entities-with-composite-keys]
Define the primary key
b.HasKey(c => new {c.FormId, c.OptionId});
注意
沒設定主鍵的話，會出現以下錯誤：
The entity type 'User' requires a primary key to be defined.
Define the foreign key
Last modified: 23 February 2024