The proxy class is an actual subclass of the persistent class.
实际上，代理类是持久化类的子类。
The portion provides an explicit map between columns in the database and properties of a persistent class.
部分提供了数据库字段与持久化类属性之间的一显式映射。
So, one need only add a few lines of code to an application and create a simple mapping file for each persistent class, and NHibernate takes care of all database operations.
好了，我们只需要在程序中添加几行代码，和为每一个映射文件创建持久化类，而且NHibernate可以照顾到所有的数据库操作。
The table must match the definition of your attributes; for example, the primary database key for the equations table must be the primary key of the Persistent class as well.
表必需与属性定义匹配，例如，等式表的主数据库键必须也是 Persistent类的主键。
Figure 1 presents a base class for persistent entities that contains the necessary auditing fields.
图1为包含审计字段的持久化实体提供了一个基类。
The warning comes in new international study into the links between climate change and a class of man-made toxins called persistent organic pollutants.
这样的警告来自于一份全新的国际科学报告，它详细研究了气候变化与名为“持久性有机污染”的一系列人为有毒物质之间的关系。
The file Equation.pm contains all the code necessary to inherit from a Persistent: : DBI class.
文件equation . pm包含从Persistent：dbi类继承所需的所有代码。
The solution that JPA 2.0 provides is the ability to instantiate a metamodel class named Person_ that corresponds to Person by exposing the same persistent attributes statically.
JPA 2.0提供的解决办法通过静态地公开相同的持久化属性实例化名为 Person_的元模型类（对应于Person）。
Before JPA 2.0, this semantic distinction was represented via corresponding class-level annotations in the persistent-class definition.
在JPA 2.0之前，这种语义区分是通过持久化类定义中的对应类级别注释来表示的。
The annotations inform Hibernate what within a class should be considered persistent.
注释告知Hibernate一个类中的哪些内容可以考虑留存。
The model is made up of five classes, four of which are persistent. The non-persistent OrderSystem class serves as the root of the object model.
这个模型由5个类组成，其中的4个是要持久化的类，非持久化类oradersystem当做这个对象模型的宿主。
The metamodel class is annotated as @StaticMetamodel(domain.Person.class) to designate it as a metamodel class corresponding to the original persistent domain.Person entity.
元模型类被注释为 @StaticMetamodel(domain.Person.class)以将其标记为一个与原来的持久化 domain.Person实体对应的元模型类。
It has colorful second class activities and the youth volunteer activities are persistent.
第二课堂活动丰富多彩，青年志愿者活动坚持常年不懈。
It has colorful second class activities and the youth volunteer activities are persistent.
第二课堂活动丰富多彩，青年志愿者活动坚持常年不懈。
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