查询词典 network database

Faced with the increasingly complex network topological connection and gradually increased network flow, network manager needs to know online such network activity information as the network flow of each network section, network bandwidth availability and the early warnings of hardware breakdown and software failure.

面对益复杂的网络结构与逐渐增加的网络流量，网络管理者需要实时了解各个网段的流量情况、网络带宽的使用率、硬件故障与软件失误的预警等网络运行信息，要做到这点，最有效的办法就是在原有的网络硬件基础上构建一个网络管理系统以实现对全网的监控。

Primarily, the thesis assays the condition of network framework, the network was divided into three levels in terms of network management in order to establish the distributed method ,and still pointing out the intention and denotation of studying the Topology Discovery.Next, the thesis analyzes SNMP protocol minutely, including its development, principle, and the Network Management system that established on the SNMP protocol. Have analysed MIB in detail and the application way of MIB in network management .The thesis also assays the ICMP protocol, describing its working principle and the format of datagram minutely , and describing two important tools of ICMP- Ping and TraceRoute in detail. On the base of upper analysis, the thesis expounds a kind of distributed Topology Discovery project, and book it in one autonomy system. Topology Discovery was divided into two levels in terms of network management, and analyses the way of linking up between the two level. The thesis minutely assays Router-Level Topology Discovery technology basing on SNMP and Subnet-Level Topology Discovery technology basing on ARP and ICMP. According to these analyses, the thesis explores the specific methodology and the technology of XML data object which using the WinSNMP API to achieve topology discovering system on the development platform of Visual C++, and also analyses the technology of topology analysis and topology graph minutely. Moreover, the thesis assays the technology of basic firewall and Topology Discovery response strategy. Finally, the thesis analyses the underlying blind problem of the topology finding, and also analyses the reason that the blind problem produced and the way that reduced. The distributed algorithm that this paper puts forward has a certain directive significance in wireless network or other fields.

本文首先分析了网络结构状况，将网络从网络管理的角度划分为三个层次，为分布式的方法奠定了基础，同时还指出拓扑发现研究的目的及意义；接着本文分析了SNMP协议，详细分析了SNMP协议的发展状况，协议的工作原理，以及由SNMP协议基础上建立的SNMP网络管理体系，详细分析了MIB，以及MIB在网络管理上的应用方式；本文又分析了ICMP协议，详细描述了ICMP的工作原理和数据报格式，并详细描述了ICMP的两个重要工具-Ping 和TraceRoute；然后本文在结合上述分析的基础上，提出了一种分布式的拓扑发现方案，将拓扑发现拟订在一个自治系统内，将拓扑发现从网络管理角度划分为路由器级和子网级两个层次，分析了两个层次之间的衔接方式，同时从拓扑地域的角度将拓扑发现过程分布化，分析了分布式算法的具体方法和分布式结点之间的数据通讯方法，本文详细分析了基于SNMP的路由器级拓扑发现技术和基于ARP和ICMP的子网级拓扑发现技术；根据这些分析，本文利用XML数据对象作为分布式算法中的数据对象，分析了XML的技术，本文使用Visual C++开发平台实现网络拓扑发现系统，详细分析了使用WinSNMP API实现基于SNMP的路由器级拓扑发现和基于ARP的子网级拓扑发现，分析了使用Winsock编程实现基于ICMP的子网级拓扑发现，本文还对拓扑分析和拓扑图的绘制技术作了较细致的分析；本文最后还分析了基本防火墙技术，分析了几种类型的防火墙对拓扑发现带来的影响，以及在拓扑发现时的应对策略，本文还分析了拓扑发现中可能产生的盲点问题，分析了盲点产生的原因以及拓扑发现中减少盲点的方法。

And point out the essence of the network economy is the technology-economy innovations occurred by technology innovation. Then summing up the new characters of the network economy. Point out the law of the network economy. Put forward the economic character of the network under the double economic effect, And emphasized the microanalyses and case demonstration, validated the direct extra- economic character of the network and the indirect extra- economic character of the network. Finally, Analyses the influence of the network economy on the traditional economics theory.

然后对网络经济的新特征作了归纳总结，指出了网络经济的发展规律，提出了网络倍增效应下的网络经济性，并重点对网络外部经济性效应进行微观分析和案例实证，验证了网络直接外部经济性效应和间接外部经济性效应，最后分析了网络经济对传统经济理论构成的冲击。

By strengthening leading of the party and the theory supporting; making the specialized capable and effective work troop of the network ideological and political education; displaying the function of the network carrier and strengthening the construction of the position of the network; establishing and perfecting the mechanism of the network ideological and political education in network The exploration in the view of study and systemic analysis for actual effect of network ideological and political education for resoling cyber crime. On this thesis have certain significance in theory and reality for promoting the innovation of network ideological and political education and strengthening of actual effect of it.

说到底互联网己不只是一种媒介、媒体和传播工具，它已经完全构成了一个新的社会形式，在这些认识主体、认识对象、教育主体、教育对象、教育方式、教育途径、教育形式以及教育内容都发生了前所未有的变化情况下，就必然要把社会发展、人的发展和思想政治教育的发展，把思想政治教育各个方面、各个环节的发展联系起来、整合起来，研究网络环境下的思想政治教育创新发展的系统性、规律性，来应对网络犯罪的严峻形势。

The author has suggested for the first time batch formula theory building on glass network structure concept basis.The upshots of batch theory are that intrasystem oxides was divided into network-forming oxide,network-modifying oxide and network-finishing oxide according to their property,and batch was computed according to quantitative rateof network-forming oxide,network-modifying oxide and network-finishing oxide.

笔者首次提出了建立在玻璃网络结构概念基础上的热法制作硅钾肥的配方理论，即将系统内氧化物组分按照其在玻璃网络体中的作用，划分为网络形成体和网络改性或修饰体，根据它们之间的量比关系进行配料计算。

A method for carrying out terminal management based on EPON includes connecting unit management system on optical line terminal based on EPON and setting up network management channel between them and between optical line terminal and each network terminal, carrying out analysis on message by optical line terminal when network management protocol message is sent to optical line terminal by unit management system, retransmitting message to network terminal by set up operation-maintenance channel when network protocol message is aimed at network terminal and retransmitting message reported from network terminal to unit management system by optical line terminal.

一种对基于EPON进行终端管理的方法，在基于EPON的光线路终端上连接设备管理系统，在它们之间建立网络管理通道，并在光线路终端和各网络终端之间建立承载在操作管理维护协议层上的网络管理通道；设备管理系统向光线路终端发送网络管理协议报文时，光线路终端对该报文进行解析，如果是针对网络终端的网络管理协议报文，则将该报文通过所建立的操作维护通道转发给该网络终端；网络终端向设备管理系统上报的消息，由光线路终端转发给设备管理系统。

In this example, the use of the SQL Server 2000 database here only to the corresponding Access database, if you want your machines running the program in SQL Server under the re-establishment of the same database, or use the above-described Import and Export tools. Mdb database into SQK Server databases.

在本实例中，使用的是SQL Server 2000的数据库而这里只给了对应的Access数据库，如果你想在你的机器上在运行程序需要在SQL Server下重新建立一样的数据库，或者使用前面介绍的导入导出工具将。mdb数据库转化为SQK Server数据库。

Based on the research of TGIS and the advantages of existing spatio-temporal database model, this paper proposes a design of a spatiotemporal cadastral database which is divided into historical database and alterative database.

本文借鉴目前TGIS和各种时空应用模型的优势，提出一种基于宗地变更的时空数据结构。

Therefore I asks according to design that for the database management system, SQL language principle and Delphi7 application programming of SQL Server2000, Delphi database technology has carried out more thorough study and application , is analysed mainly consummately for the demand of the management system of chicken run , function modular partition and database pattern analysis, and from this, have designed database structural and application program.

因此本人按照设计要求，对SQL Server2000数据库管理系统、SQL语言原理、Delphi7应用程序设计，Delphi数据库技术进行了较深入的学习和应用，主要完成对养鸡场管理系统的需求分析、功能模块划分、数据库模式分析，并由此设计了数据库结构和应用程序。

The author introduced to design a language for dominant with Visual Basic 6.0, combine Access2003 of tiring-room relation database, build Xinjiang the principle of system of information of database of feral fruiter resource and method, the database technology development that uses the computer goes the complete feral fruiter that can apply extensively at service of fruiter production, scientific research, education, society to wait is planted program of qualitative resource database.

笔者介绍了以Visual Basic 6.0为主导设计语言，结合后台关系数据库Access2003，建立新疆野生果树资源数据库信息系统的原理和方法，运用计算机的数据库技术开发出一套完整的可广泛应用于果树生产、科研、教学、社会服务等的野生果树种质资源数据库程序。

Fostering the concept of multi-culture firmly and mastering the development of advanced culture correctly are conductive to resisting terrorism, separatism of nationalities and ultraism of religion, which is of great academic theoretical, immediate and profound historical si...

牢固树立多元文化的理念和正确把握先进文化的发展方向，有助于在世界范围内自觉地抵制恐怖主义，民族分裂主义和宗教极端主义。不仅具有重大的学术理论意义，而且也具有重大的现实意义和深远的历史意义。

But if anyone walks in the night, he stumbles, because the light is not in him.

11：10 若在黑夜行走，就必碰跌，因为那光不在他里面。