This paper introduces the basic concept and model of access security control of the database system in a multiuser information system. It also describes its concrete implementation.
本文介绍了多用户信息系统中数据库的安全性控制的基本概念及控制模型，以及在多用户信息系统中安全性控制的实现方法。
This paper describes the concept, system structure of the Decision Support system (DSS) firstly, then introduces the database, model library, knowledge library and arithmetic library of the DSS.
本文首先对决策支持系统(dss)的概念、体系结构进行了简要的介绍，阐述了DSS的数据库系统、模型库系统、知识库系统以及方法库系统。
In order to adapt to the design requirement of spatiotemporal database, this article proposes a new spatiotemporal er enhanced model and introduces its relevant concept as well as design method.
为了满足时空数据库设计的需要，提出了新的时空er模型并给出了相关的概念及设计方法。
According to the design flow of the database, this paper develops a multi-physiological parameter network database with EER concept model and distributed database technology.
本文按照数据库设计方法学流程，采用EER概念模型和分布式数据库技术，对多生理参数网络数据库的设计进行了阐述。
This article introduces the concept and model of a component catalog database to manage the component database.
论文为管理分布式构件库提出了构件目录库的概念和模型。
Whether selecting right data concept model and database structure design method or not is the key problem of database design.
能否选择恰当的数据概念模型和数据库结构设计方法是数据库设计能否获得成功的关键所在。
Whether selecting right data concept model and database structure design method or not is the key problem of database design.
能否选择恰当的数据概念模型和数据库结构设计方法是数据库设计能否获得成功的关键所在。
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