应用程序组的概念允许将用户组存储在数据库中而不是配置的LDAP中。
Application groups concept allowing you to store user groups in a database and not in the configured ldap.
存储并执行指令的能力（存储程序的概念）是通用计算机最重要的特性。
The ability to store and execute instructions, the stored program concept, is the most important property of a general-purpose computer.
开发人员可以使用一个相对稳定应用程序概念模型工作，并将这一模型映射到多种存储架构。例如不同的数据库管理系统的实现。
Developers can work with a consistent application object model that can be mapped to various storage schemas, possibly implemented in different database management systems.
概念模型和特定存储模式之间的映射可以改变不改变应用程序代码。
Mappings between the conceptual model and the storage-specific schema can change without changing the application code.
可以在不更改应用程序代码的情况下更改概念模型与特定于存储的架构之间的映射。
Mappings between the conceptual model and the storage-specific schema can change without changing the application code.
可以在不更改应用程序代码的情况下更改概念模型与特定于存储的架构之间的映射。
Mappings between the conceptual model and the storage-specific schema can change without changing the application code.
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