To be effective, it must be simple enough to communicate the required data structure to the end user, yet detailed enough that the database designer can create the physical structure.
为了是数据模型更加有效，它必须足够简单以使最终用户能够沟通必需的数据结构，同时它也要足够详细以使数据库设计人员能够创建物理结构。
With 32-bit memory structure, no matter how big the physical RAM is, the instance, database configurations are limited by the 4gb addressable space.
对于32位内存结构，不管物理ram有多大，实例、数据库配置都受到4gb可寻址空间的限制。
When somebody designed that database, they didn't have tables like this, so they moved from a model of abstract things they wanted to represent into some physical database structure.
最初设计数据库时，并不存在这样的表，因此这些表需要从抽象的模型中得出，表现为某些实际的数据库结构。
Physical class and attribute structure of system interfaces (which will equate to database structures where direct data access is the best or only option).
系统接口的物理类及属性结构(等同于数据库结构，在其中直接数据访问是最好或唯一的选择)。
In order to improve the security of VFP database files, this paper presents a method to encrypt VFP database files by altering the physical structure.
本文采用修改VFP数据库文件内部结构的方法，来加密vfp数据库文件，从而提高VFP数据库的使用安全性。
Since the responsibility for accessing the physical data rests with the database management system, the programmer can ignore the physical data structure.
由于存取实际数据的责任由数据库系统承担，因此程序员就可以不考虑实际的数据结构。
The database composing, the construction principle, the logic design, physical structure design, the original data design, the data warehouse design and the security maintenance were completed.
完成了数据库构成、建设原则、逻辑设计、物理结构设计、原数据设计、数据仓库设计、安全维护等。
This article introduced the design solution of the FOC database system solution involved in the physical database structure, object design and etc in detail.
本文从数据库的物理结构、数据库对象设计、数据库备份等方面详细介绍了FOC数据库系统的设计方案。
Research contents of database design include database structure characteristics design, database behavior characteristics design and database physical model design.
研究数据库的设计内容，主要包括数据库的结构特性设计、数据库的行为特性设计、数据库的物理模式设计。
The emphases were on the building of the conceptual structure, logical structure, physical structure and application development of the database of the air traffic control system.
重点建立了空中交通管制系统的数据库概念结构，逻辑结构和物理结构，并进行了应用开发。
Since the responsibility for accessing the physical data rests with the database management system, the programmer can ignore the physical data structure .
由于存取实际数据的责任由数据库系统承担，因此程序员就可不考虑实际的数据结构，导致了程序更少地依赖于它的数据。
The design of space-database went through concept design, logical design and physical design. This process gave prominence to designing the road and data structure of accidents information.
空间数据库的建立经历了概念设计、逻辑设计、物理设计过程，主要突出了道路、事故信息的数据结构设计。
The design of space-database went through concept design, logical design and physical design. This process gave prominence to designing the road and data structure of accidents...
空间数据库的建立经历了概念设计、逻辑设计、物理设计过程，主要突出了道路、事故信息的数据结构设计。
The design of space-database went through concept design, logical design and physical design. This process gave prominence to designing the road and data structure of accidents...
空间数据库的建立经历了概念设计、逻辑设计、物理设计过程，主要突出了道路、事故信息的数据结构设计。
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