System Electronic Chart ( SENC) is the direct source of data for ECDIS. Electronic Chart database of user format is the base of SENC.

As the basic of electronic chart application system, ECDB ( Electronic Chart Database) decides the function and performance of the system.

电子海图数据库是电子海图应用系统的基础，它决定了电子海图应用系统的功能和性能。

Taking the chart data of format S-57 as the source data, in this paper we utilize the database management system Oracle 9i to build up electronic chart database, and also accomplish quick searching for the SENC data through R-tree spatial index technology.

本文以S&57标准格式的海图数据为数据源，利用Oracle9i数据库管理系统，建立电子海图数据库，并借助R树空间索引技术，实现电子海图数据的快速检索。

This platform supports internet/ intranet and can realize the share of electronic chart database.

该平台支持Internet/Intranet，能够实现电子海图数据库的共享。

A Knowledge-Based Approach to Fuzzy Querying over Relational Database

一种基于知识的关系数据库模糊查询方法

First of all, this paper investigates research status of fuzzy relational database and properties of vague set, and then puts forward a generalized fuzzy relational data model on vague set ( VGFRDM) and a fuzzy database structured query language on vague set ( VFSQL).

本文首先探讨了模糊关系数据库的研究现状和Vague集的性质，然后提出了基于Vague集的广义模糊关系数据模型VGFRDM和基于Vague集的模糊数据库查询语言VFSQL。

A fuzzy relational database model with weighted fuzzy attribute values is presented and the concepts of semantic distance and fuzzy users' view are introduced.

本文首先提出了一种属性具有加权模糊值的模糊关系数据库模型，引入了语义距离及模糊视图的概念。

The results proves that the relational database converted into fuzzy relational database, the performance is very similar, and the feasibility is higher.

结果证明由关系型数据库转为模糊数据库后性能相近，可行性高。

Quotient Operators of Fuzzy Relational Database Based on the Semantics

一种基于语义的模糊关系数据库除操作

Design and Implementation of Fuzzy Relational Database

模糊关系数据库FRDBMS的设计与实现

And a brief introduction of fuzzy relational database technology applications.

并简单介绍了模糊关系数据库技术的应用领域。

D parameterized solid modeling can be realized in CAD system with the application of EDB principle.

详细介绍了工程数据库的设计、体系结构、工作原理及访问实现,并给出了工程应用实例.

EDB will issue a Certificate of Incorporation to schools when their IMCs are established.

教育局会在该学校设立法团校董会时向学校发出“法团校董会证书”.

For local and secondary school teachers, please apply via EDB Training Calendar System.

本地中、小学教师请透过教育局培训行事历报名.

ARTs-EDB is an embedded active real-time database researched and developed independently by us.

ARTs -EDB 是自行研发、拥有自主知识产权的嵌入式主动 实时 数据库.

TGF � � 1 could partially reverse the expression of EDA and EDB regions.

转化生长因子β1可部分逆转EDA、EDB的表达.

ARTs-EDB takes the S-A model as its trigger model.

ARTs-EDB的触发器采用S -A 模型.

According to the field function, there are five Methods : To visualize the data field.

数据发射其能量的形式和特性的不同,导致数据场场强函数的差异.

Drag the data field you want from the Data Sources window to your document.

将您想要的资料栏位从[资料来源]视窗拖曳到文件.

Data Field names cannot be blank. Please enter a name for this data field.

“数据字段”的名称不能是空白. 请输入此数据字段的名称.

For a complete example, see How to: Customize Data Field Display in the Data Model.

有关完整示例, 请参见如何: 在数据模型中自定义数据字段显示.