数据库管理

Because the information in groupware system has Characteristic of complex, various, large quantity, non-structure or structure complex, close relativity of information, etc, and the traditional relational database can hardly handle these complex and various information. This paper aims at the problems that groupware system meets in application, put forward the research on groupware system based on object-oriented database management system.

由于群件系统中所处理的信息具有复杂、多样、量大、非结构化或结构复杂以及信息间的相关性紧密等特征，而传统的关系型数据库很难处理这些复杂多样的信息，因此，本文针对群件系统对数据库的应用需求，提出了基于面向对象数据库管理系统的群件系统的研究。

Cst 290. Database Management Systems Design and Development. This course covers the concepts, theory and application of database management systems and its development methodology.

Cst 290。数据库管理系统的设计和开发该课程涵盖了数据库管理系统的概念、原理和应用，以及它的开发技术。

It is essential for information technology professionals to enhance their efficiency and capability by gaining skills in areas such as programming, database technology, database administration, Web development, networking, security administration, and computer security.

至关重要的是，信息技术专业人员，以加强等领域取得的编程技巧其效率和能力，数据库技术，数据库管理，网络开发，网络，安全管理，计算机安全。

Moreover, as the problem of how to connect other application system, it discusses the integration problem of Domino and RDBMS, realizes visiting external RDBMS in Domino via Open Database Connection interface.

针对如何连接企业内部的其他应用系统这一问题，讨论了Domino和关系型数据库管理系统的集成问题，并实现了在Domimo中通过开放数据库连接接口访问外部关系数据库。

The objective of the course are to understand and master the relation database, including its establishing principle, fundamental structure, data type and the application fields.

本学科的教学要求：通过学习数据库管理系统掌握数据库建立的各种方法以及对现有数据库的使用方法，包括数据库的维护，各种查询，窗体的创建，报表的创建等。

The choosing of Database management tool is discussed, and problem of security Database and MIMOSA criterion are presented.

讨论了数据库管理工具的选择，MIMOSA数据库规范，讨论了数据库安全问题。

Given the difference in database management systems, it is clear to see why the Versant database uses an object database for its projects.

鉴于不同的数据库管理系统，很清楚地看到为什么Versant数据库使用一个对象数据库的项目。

Based on the operating feature of hydrographical database system,this paper discusses the reasons that may cause potential troubles in the system.

基于海道测量数据库系统的运行特点，分析了数据库可能产生的故障及原因，并通过研究Oracle数据库管理系统各种备份方案，提出了实用的海道测量数据库备份与恢复策略。

The problem add:This text elaborated the related technique of the database management system development first and it transacts the background,the development process and meaning of the automation creation, then introduces the total design project of this system, including the system analysis,the database design and the system function design, the system test etc.

问题补充：本文首先阐述了数据库管理系统开发的相关技术及其办公自动化系统产生的背景、发展过程和意义，然后介绍了本系统的总体设计方案，包括系统分析、数据库设计及系统功能设计，系统测试等内容，重点介绍了系统各个管理功能的具体实现，最后对系统实现的不足之处进行了分析并提出了改进的方法。

The main contents and results of research in this paper are shown as following: It is important to built the motion model of a virtual system. As the virtual object is the submarine in this simulation system, we studied on the motion model of the submarine and gave the submarine six DOF space motion equation MultiGen-Paradigm corporation's modeling software named Creator is used, the modeling of all entities and 3D terrain in virtual ocean environment is accomplished. Then introduced the theory of Large Area Database Management and realized the Large area database management; In the course of 3D scene simulation, Vega is utilized to develop the project. The building of 3D scene is done, which includes the simulation of static and dynamic ocean surface, realization of ocean wave, simulation of bow wave and stern wake, utilization of lighting and material, simulation of cloud and fog, kinematics' modeling of submarine etc.

论文的主要研究工作和成果包括以下一些内容：建立虚拟对象的运动模型是构造一个虚拟系统的关键所在，建立的运动模型准确与否直接关系仿真对象模拟的逼真度，由于本仿真系统的虚拟对象是潜艇，所以对潜艇的运动模型进行了研究，给出潜艇空间六自由度运动方程；利用MultiGen-Paradigm公司的Creator建模软件完成虚拟海洋环境中个实体模型建模和三维海底地形模型的建模；然后介绍了大地形数据库管理(LADBM，Large Area Database Management)技术的基本原理，实现大地形数据库管理；在三维场景仿真中，使用Vega驱动软件进行软件开发，完成了三维场景空间的建立，主要包括动态和静态海洋的仿真、海浪、船首波浪和传尾尾迹的实现，灯光和材质的使用，云和雾的模拟等。

This brought fixed cost, but it also is meant at the same time use a source to won't make you singlehanded assume a problem.

这带来了一定的成本，但它同时也意味着使用开源不会让你独力承担问题。

He gained a small fortune in real estate.

他在房地产上发了一笔小财。