...值的(Single-valued) ) 多值的( 多值的 (multi-valued) ) 实体键( 实体键(entity key) ) 实体主键( 实体主键(entity primary key) ) 基本概念 3. 联系(relationship) 实体与实体间的关系抽象为联系,和实体一样, 联系也有属性.
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在该测试中，我们创建了一个名为ogiscustomer的实体，它有包括主键(SRCSEQ)在内的4个成员属性。
In this test, we created a single entity named OgisCustomer, which has four member attributes including the primary key (SRCSEQ).
还可以为具有组合键的实体创建一个主键类。
You can also create a primary key class for entities that have composite keys.
注解所指定的属性是实体的主键，[stringlength(512)]指定了字符串属性的最大长度值。
The [key] annotation specifies that a property is the entity's primary key, while [StringLength (512)] specifies the maximum length of a string property.
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