用户身份格式有一些标准的模型，它们按层次存在于一个有组织的数据库中，这个数据库位于结构化身份知识库中，如LDAP，它可以帮助组织合理化用户提取。

There are standard data models for user identity formats and layering an organizational database on a structured identity repository like LDAP, can help organizations streamline their provisioning.

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针对航空火控系统结构和检测的特点，设计了一种基于层次数据模型的航空火控系统检测数据库系统。

A test database system for the aeronautic fire control system based on hiberarchy is designed in allusion to the structure and the test characteristic of the aeronautic fire control system.

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针对航空火控系统结构和检测的特点 ，设计了一种基于层次数据模型的航空火控系统检测数据库系统。

This paper makes a study of the application of Direct3D in development of air combat simulation system of airborne FCS (Fire Control System) and introduces the method of software development.

youdao

针对航空火控系统结构和检测的特点 ，设计了一种基于层次数据模型的航空火控系统检测数据库系统。

This paper makes a study of the application of Direct3D in development of air combat simulation system of airborne FCS (Fire Control System) and introduces the method of software development.

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