查询词典 database access

Then it elucidates the creation of the database by the E-R diagram and the design of the database.

接着通过E-R图说明数据库的搭建和数据库的设计。

In order to establish the systematic structure of Web Serves and enhance reusability of the software and safety of application syste m,this paper lays emphasis on researching and analyzing technology of loginning,data enciphering,database connection visiting,ensuring database safety,defending Web attack and reserving data to avoid any disaster and then gives some better corresponding solutions.

为了搭建多层结构的分布式Web应用系统的Web Servers体系结构，提高软件的可重用性及应用系统的安全性，本文重点对遥程数据库维护中的登录技术、数据加密技术、数据库连接访问技术、数据库安全技术、防Web攻击技术及远程数据容

Executing software engineering in the database design is an important method of database design.

在数据库的设计中实施软件工程是数据库设计的重要方法。

She said that when records are expunged from the state database, they are automatically deleted from the federal database, and she noted that Maryland regulations can't be applied to the federal government.

她说，当记录中删除从国家数据库，它们会自动删除从联邦数据库，她指出，马里兰州的法规不能适用于联邦政府。

Federated database is a kind of distributed database.

而联邦数据库是分布式数据库领域的一个分支，它弥补了传统分布式数据库的不足。

The view-making tools of current main database systems do not have generality and most of the user interlaces are not friendly. A generic method on view-making method of database is proposed. The design patterns are fully used in the method.

由于目前主流数据库系统自带的视图生成工具不具有通用性，并且多数用户界面不够友好，因此提出1种基于设计模式的通用数据序视图生成方法。

The methods of the extraction of attributes in AutoCAD database and the interlinking way of ObjectARX with database are expatiated, by which a subsystem for materials collection is developed.

通过对AutoCAD图形中属性信息的存储和提取原理、ObjectARX接口与数据库的互连机制以及动态链表的设计与应用方法的深入研究，成功地实现了AutoCAD图形中的材料自动汇总。

This is the curriculum database operations, including the more commonly used database functions.

这是数据库课程的大作业，包括较为常用的数据库的功能。

This paper is based upon XiShan Colliery Parent Company .The data of DongQu Mine pit ventilation resistance mensuration is combined. And system theory, graph theory, ventilation network technology and computer technology are utilized. According to the reality of coalmine, we think that graph and database is incorporate in mine ventilation system. So based on this, ventilation system standard graph is founded, the tool of ventilation graph to draw is made, the ventilation network calculation is realized, the outcome of the ventilation network calculation is seen on the screen, and opaquing and inquiring of the road parameters and so on. In addition to mine ventilation drawing-database visual management system is developed.

本文基于西山煤矿总公司东曲矿〖东曲矿矿井通风网络计算机管理系统〗科研项目，结合东曲矿矿井通风阻力测定，运用系统理论、图论、通风网络技术及计算机技术，针对煤矿实际，将矿井通风系统中图形和数据库贯穿为一体，创建了通风系统标准图库并编制了通风图形绘制工具，实现了风网解算和解算结果图形显示及巷道参数的修改、查询等功能，开发了矿井通风图形数据可视化管理系统。

Moreover, A hybrid algorithm, ALHybrid, which is made of the algorithm LIDBSO and the algorithm AprioriIpv, is designed. Two algorithm, MQC_Apriori and MQC_LIDBSO, are given to mining multiple level quantitative association rules with item constrains. Two algorithm, PMARⅡ and PMARⅢ, which are based on different sequential mining algorithms, are given for parallelling mining association rules. In order to solve the mining association rules problem when we add a set of data to a database or delete a set of data from a database, two incremental updating algorithm, EUAR and EUAR, are given. Three incremental updating algorithm for association rules mining, DIUAⅠ, DIUAⅡ and DIUAⅢ, are dedigned to solve the three kinds of association rules incremental updating problem in distributed databases.

另外，文中还设计了一个算法LIDBSO与算法AprioriIpv相结合的混合采掘算法ALHybrid；对于多层次、带约束、多值属性关联规则的采掘问题，给出了两个采掘算法：算法MQC_Apriori和算法MQC_LIDBSO；在关联规则的并行采掘方面，还设计了两个基于不同顺序关联规则采掘算法的并行算法：算法PMARⅡ和算法PMARⅢ；在关联规则的增量式更新问题上，还给出了两个改进算法：算法EUAR和算法EUARˉ，分别用于解决当数据库增加或删除一个数据集合时的关联规则增量式更新问题；针对分布式数据库中的关联规则增量式更新的三类问题，提出了三个增量式更新算法：算法DIUA Ⅰ、算法DIUAⅡ和算法DIUAⅢ。

We have something to do in the new stage.

在这段崭新的时期中，我们有一些要做的。

The difference between tourism decision-making under uncertainty and risky tourism decision-making is indistinctive.

其中不确定性旅游决策和风险旅游决策的界线比较模糊，两者的区分是相对的。