现在，将所有这些添加到从每个实体获取部分属性的排列中。
Now, add to this all the permutations of getting partial attributes from each entity.
在这种情况下，您只有少量的实体和许多属性。
添加一个新实体COMPLETION _ CODES，它有两个属性：COMP _ CODE和DESCRIPTION。
Adds a new entity, COMPLETION_CODES, which has two attributes: COMP_CODE and DESCRIPTION.
正如你所看到的，我们只是绑定到实体类的用户属性。
As you can see, we simply bind to the User property of the entity class.
世界的实体只能规定一种形式，而不能规定物质的属性。
The substance of the world can only determine a form and not any material properties.
构成实体键的属性是在设计时选择的。
The properties that make up an entity key are chosen at design time.
构成给定实体类型的实体键的属性不可更改。
The properties that make up an entity key for a given entity type cannot change.
构成给定实体类型的实体键的属性不可更改。
The properties that make up an entity key for a given entity type cannot change.
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