Sometimes, composite keys are called natural keys or business keys.
有时，组合键也称为自然键或业务键。
You can also create a primary key class for entities that have composite keys.
还可以为具有组合键的实体创建一个主键类。
If composite keys are the standard, then that's not likely to change any time soon.
如果组合键是标准，那么就不可能很快发生变化。
The downside to composite keys is that they are a little difficult to design and code.
组合键的缺点是设计和编码略有难度。
Probably the most common reason for using composite keys is for backwards-compatibility.
使用组合键的最常见的原因或许就是为了向后兼容。
Composite keys are sometimes used because the choice of key relates in some way to the end-user business domain.
某些时候使用组合键的原因是所选键在某些方面与最终用户的业务领域相关联。
Type inference on composite keys depends on the names of the properties in the keys, and the order in which they occur.
组合键上的类型推理取决于这些键中属性的名称，以及属性的出现顺序。
Various composite keys were used for adjustment in order to well control the comprehensive installation quality of rotors.
采用多种组合键进行调整，使转子安装的整体质量得到较好控制。
Over the past month, I've been able to find Rails plug-ins to handle voting, versioning, Ajax, composite keys, and all manner of features that basic Rails doesn't support.
在过去一个月里，我可以找到能够解决投票、版本化、Ajax、复合键以及不受基本Rails支持的所有特性的插件。
I think it's quite unusual to intentionally design a database this way nowadays, so it's likely you'll only need to create composite keys where it is a long-established practice.
我认为，如今故意以这样一种方式设计数据库的做法并不常见，您只需要在符合惯例的场合创建组合键。
Should I use composite primary keys if I use JPA and the keys can change?
我应该使用复合主键如果我使用JPA和键可以改变吗？
The composite material may be configured by standard processing methods to finished products such as COINS, tokens, and medallions, keys, and other non-nesting articles.
可以通过标准的加工方法将所述复合材料配置为成品，如硬币、代币和大奖章、钥匙和其它非嵌套物件。
We will be covering how to do sky replace and get a matte using Luma Keys and add 3d layers of elements to build a basic composite.
我们将涵盖如何做天空取代并获得磨砂使用亮度键，添加元素的三维层构建一个基本的复合材料。
The article recounts the calculation keys and design process of composite ground with gravel pile and CFG pile in load-bearing capacity and deformation.
阐述碎石桩加cfg桩复合地基的设计过程，在满足承载力、变形方面阐述了碎石桩加cfg桩复合地基的计算要点。
The article recounts the calculation keys and design process of composite ground with gravel pile and CFG pile in load-bearing capacity and deformation.
阐述碎石桩加cfg桩复合地基的设计过程，在满足承载力、变形方面阐述了碎石桩加cfg桩复合地基的计算要点。
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