A composite key is a key made up of multiple columns.
复合键就是由多个列组成的键。
This duplication is required to create the composite key.
这样的重复是创建组合键所必需的。
This annotation is the first piece of the composite key jigsaw puzzle.
此注释是组合键拼图中的第一块。
The combination of all these factors may make composite key design a necessity.
所有这些因素结合在一起，使组合键成为一种必不可少的技术。
This is where the composite key is defined with nested @AttributeOverrides annotations.
组合键就是在这里使用嵌套 @AttributeOverrides注释定义的。
If the join key is a composite key, each key column must be prefixed with the PRIOR operator.
如果联接键是一个复合键，那么必须使用PRIOR运算符为每个键所在的列加上前缀。
The composite key defined in listings 1 and 2 allows you to bundle a number of columns together.
清单1和清单2中定义的组合键允许您将多个列绑定在一起。
These annotations are used to define the composite key columns: "STREET" and "CITY" respectively.
这些注释用于定义组合键列：分别是“STREET”和“CITY”。
Next up in Listing 2 is the @IdClass annotation, which defines the composite key class reference.
清单2中的下一个注释是 @IdClass，它定义组合键类引用。
A business object could be identified by more than one of its properties, which is called a composite key.
可以使用其多个属性对业务对象进行标识，这称为组合键。
To uniquely represent a dimension using identifiers from an operational system, you sometimes need to use a composite key.
为了使用操作系统中的标识符惟一地表示维度，您有时需要使用一个复合键。
To define a composite key, you simply take some attributes from the domain and combine them to provide the required degree of row uniqueness.
要定义组合键，只需从该领域中选择一些属性，并将其组合在一起，提供所需的行唯一性程度。
To define a composite key, you simply take some attributes from the domain and combine them to provide the required degree of row uniqueness.
要定义组合键，只需从该领域中选择一些属性，并将其组合在一起，提供所需的行唯一性程度。
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