关系数据库模型 meaning in English
relational model of database
Examples
- In the part of realizing design , firstly we expound the designing of the database based on uml , the mapping from uml classes to relation database modeles , the mapping from uml classes to tables and the mapping of tables in aibas . then we describe the mapping of c + + codes and its reverse engineering . and then we introduce the system structure based on corba and producing of corba / idl codes . at last we realize the system simply with a case tool - aibas
在系统的实现部分，本文首先描述了基于uml的数据库的设计，并详细描述了uml类向关系数据库模型的映射、 uml中的类图中的类映射成表以及数据表格在case工具aibas中的映射，然后文章又描述了基于uml的c + +语言的代码映射及其逆向工程，并且介绍了基于corba的体系结构和corba idl的代码生成，最后运用case工具aibas对系统进行了简单的实现。 - The organization of data : first , the author introduced the data structure of maplnfo and studied file structures of the data and the mechanism of connection ( especially the connection of graph & data ) . then , the author works out the model of the data ' s structure of this system and set up database of classifying land that based on the model of relational database
数据组织：首先简要介绍了mapinfo的数据组织结构，研究了构成mapinfo的数据文件结构及连接机制(特别是图?数连接机制) ；然后在此基础上设计出系统的数据组织模式，建立了基于关系数据库模型的土地分类数据库。 - This paper first analyzes the property of ship data and points out that we must adopt the international standards , such as ship - step and plib , to set the life - cycle information model of the ship . four kinds of product data exchange methods on internet , such as step file , sdai , database and xml . are discussed
研究了internet环境下的数据交换技术，分析了在internet上的文件、分布式对象、关系数据库和xml等四种step数据交换方法的特点，给出了express模型与关系数据库模型的映射方法，以及产品特性参数库的构造方法和er模型。 - The definition of multi - valued information system is extended and the spatial structure of rough relational database model is analyzed in this paper . the measurement of uncertainty in rough database is provided . by analysis of the spatial structure of rrdb , the upper approximation , the lower approximation and value - reduced is educed . it provides the foundation for more studies in rough relational database model
本文分析了粗糙关系数据库模型的空间结构,为粗糙数据库的不确定性进行度量提供一个依据,同时通过对粗糙关系数据库空间结构的分析,导出了基于粗糙关系数据库的上、下近似以及值约简,为粗糙关系数据库模型的进一步研究提供了理论基础。