This tip starts with a simple description of the problem: defining a composite database key.
本技巧从问题的简单的描述开始：定义组合数据库键。
This is a key, similar to a database key structure that identifies a particular cache entry as unique.
这是一个键值，如同数据库里的键结构，唯一地标识每一个高速缓存条目。
This identifier, most often a database key, can be generated and sent to the client as one of the URL parameters.
这个标识符(通常是数据库键)能够作为该url参数之一而生成并发送到客户机。
If you extract records from a database to create the XML documents, you can transfer the database key directly to the key attribute of the address_rec element.
如果您从一个数据库提取一些记录来创建XML文档，您可以将数据库键直接传输到address_rec元素的key属性。
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。
This cell contains the most recently retrieved value for a database key field.
此单元格含有数据库关键字字段的最近检索值。
This cell contains the most recently retrieved value for the primary database key.
此单元格含有数据库主关键字的最近检索值。
With the launch of the application, a global database key is generated and stored in the keychain.
随着应用程序的启动，生成一个全局数据库密钥并存储在钥匙串中。
Synchronous technology of mobile database key technology may keep the loose consistency of mobile data.
移动数据库同步技术作为移动数据库关键技术之一可以保证数据的松散一致性。
Synchronous technology of mobile database key technology may keep the loose consistency of mobile data.
移动数据库同步技术作为移动数据库关键技术之一可以保证数据的松散一致性。
应用推荐