persistent classes是什么意思_persistent classes中文

persistent classes中文什么意思

persistent: adj. 1.坚持的，百折不挠的；顽固的；持久不变的。 ...
class: n. 1.阶级;社会等级。 2.学级；班级，年级，级，班 ...
classes: 故障种类
the classes: 上层社会
persistent: adj. 1.坚持的，百折不挠的；顽固的；持久不变的。 2.持续性的；【植物；植物学】宿存的 (opp. deciduous); 【动物；动物学】持续生存的。 adv. -ly

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See " inheriting from persistent classes " for a way to isolate programs from the database choice by using inheritance
有关通过使用继承来将程序与数据库选项隔离的方法，请参阅
In the persistent classes , the datastore is an abstract storage device , which can be a file or a database , for example
在persistent类中，数据存储器是抽象存储设备，例如，它可以是文件或数据库。
By dave winters , has additional information about the persistent classes on this page , which you can also find on the cpan search page
上有关于persistent类的详细信息，也可以在cpan搜索页上找到。
Remember that good design and a clear definition of the attributes are just as important as the persistent classes in achieving successful data persistence
请记住，在实现成功的数据持久性时，好的设计和属性的清晰定义与persistent类同等重要。
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。

persistent classes中文什么意思