( 3 ) discuss the key modules in the engineering database system co - snbs , and also provide a basic framework to realize it , as well as the design affair model of the engineering database system co - s - - dbs which supports the cooperative design ( 3 )对co - s _ dbs工程数据库系统中的关键模块进行了分析与规划,给出了其实现的基本框架,并给出了支持协同设计的工程数据库系统co - s _ dbs的设计事务模型。
This paper also analyzes the e - r model for aeroengine test engineering database , the structure of aeroengine test engineering database , the interface of the data processing program with the aeroengine test engineering database , and the development of client module 同时还分析了某型发动机试车工程数据库的e - r模型、客户服务器体系结构、数据处理程序和工程数据库的接口、客户端功能模块的开发。
2 after the research for engineering database , combining this system specific engineering database demand , establish the entity - relationship diagram for cutting parameter engineering database and convert the entity - relationship diagram to relation model 2通过对工程数据库的研究,结合本系统中切削参数工程数据库要求,建立了切削参数工程数据库的实体?联系模型,并将实体?联系模型转换为关系模型。
You will also learn how to use azzurri clay to create entity relationship diagrams erds , reverse - engineer databases , add tables , edit tables , delete tables , edit relationships , add indexes , and change your underlying data model into different sql dialects 您将看到如何使用azzurri clay建立实体关系图( erd ) 、对数据库进行逆向工程、添加表、编辑表、删除表、编辑关系、增加索引以及将底层的数据模型改为不同的sql方言。
Technology trend of cad / cam is to establish integrated and distributed collaborative environments of working . the engineering database management system ( edbms ) is an effective way in sharing data in collaborative environments and receiving extensive researched in resent years Cad / cam技术的发展趋势之一是分布式集成化的协同工作环境,工程数据库管理系统是解决协同工作环境数据共享的有效途径,近年来得到广泛的研究。
Through the analysis of the healthy and intellectual supervision system of the shenzhen civil central roof network structure , the general design scheme of this kind of supervision software has been worked out and the engineer database according with requirement has been designed 本文通过对深圳市民中心屋顶网架结构健康智能监测系统的分析,得出了结构健康智能监测软件的总体设计方案,设计了符合项目需要的工程数据库。
10 ) establishing the test engineering database management system ( tedbms ) , collecting and sharing information is the base of developing casts . tow key problems had been solved in the approaching of tedbms ; they are hierarchical table storage and class futures storage 在建立试验工程数据库的过程中,本文研究并解决了面向对象试验工程数据库系统实现中的两个关键性问题? ?层次化存储和类的相关信息(包括定义、方法、类与类的关系等)的存储。
The software for the system was designed , in which the functions of the engineering database management , generating the job sequence , planning the cutting path , off - line programming and simulation , real - time monitoring and error handling , predicting for the work condition and error compensation were realized 该系统实现了工程数据库的管理,加工序列的规划,切削路径的生成,自动离线编程与仿真,实时监测与异常处理,工况预测与误差补偿等功能。
This paper gives a discuss of theories and implementing methods of developing an distributed engineering database cscw ( computer supported cooperative work ) based on oracle dbms and corba techniques in detail . the access control are modeled mathematically 本文讨论了基于现有成熟的数据库系统oracle来开发cad工程数据库分布式协同工作环境cscw ( computersupportedcooperativework )的原理和实现方法,并给出了系统信息访问控制的模型和形式化描述。
( 2 ) aimed at the requirements of the cooperative design for the database system , the engineering database system s - - dbs is extended and enhanced in logic structllfe and functions . so an overall plan of the engineering database system co - snbs is accomplished , which supports the cooperative design ( 2 )针对协同设计对数据库系统的要求,从逻辑结构和功能上对工程数据库系统s _ dbs进行了扩展和增强,完成了一个支持协同设计的工程数据库系统co - s _ dbs的总体设计。