1、英文资料翻译 The Reliability of Internet-Based Information System Summary of papers focused on the reliability of the information system with the wide area network and server structure development. Existing customers of the system and an amendment to the transformation server HTTP task to perform analysis
2、 and advanced graphics. At the same time, the article is also on the global information network and the technical background, as well as, client / server systems analysis explained. With systems development, design engineers and reliability analysts can more quickly and easily on an analysis of the
3、reliability of the system. Keywords: information system, WWW, client / server architecture, the reliability of 1. The introduction of information systems have a wide range of practical application, it can be useful for the judge to make a decisive strategy. Is generally believed that the information
4、 system is built on the model of the organizational structure of a particular data flow. In reliability engineering, researchers in the access and data analysis will be some difficulties. The system development process is the accumulation of data from the majority of analysts to obtain the reliabili
5、ty. In the component data, computer failure rate for each component, the application-specific data (for example, the importance of the application, function of the number of pins, and so on.) Developers for the design of the system are very important in terms of .Institutions in the organization, cl
6、ient / server architecture has been integrated as a good way of computer data. With the traditional focus on the computer environment, the client / server environment, users share data, applications, are easier to deal with the process 1. Ability to work depends on the balance of the application of
7、client / server system, an important role. Support the development of the Internet as an interactive data display and distribution of the means of transmission. Internet client and server interaction in the standardization of information was a great success. Similarly, in the development of client a
8、nd server software or network protocol, if not require special resources, Internet-based system can quickly create. In this chapter, we explained the Internet-based and client / server technology to achieve the reliability of information systems. Chapter II provides an overview of client / server co
9、mputing in response to the Internet. Chapter III describes the reliability of information systems implementation details, and Chapter IV of further study were summarized and discussed. 2. Internet and client / server architecture Client / server structure of the relationship between the two processe
10、s can be said to be running a number of tasks in cooperation. It supports the integrity of information systems and scalability 2. Lyu (1995) demonstrated that the client / server structure of the four advantages: cost reduction, productivity improvement, system life cycle availability of a longer an
11、d better. Therefore, client / server system architecture is considered a viable structure of information systems. With the development of the Internet to achieve client / server structure of the simplest possible way out is the task of the client software is displayed and the format of the informati
12、on obtained from the server using a web browser. Many bibliographic retrieval system is the typical example. In a web browser as a client access to an existing client / server platform, only a class of system code (HTML and help code) need to maintain. But for other systems, the client software on b
13、ehalf of the server in the implementation of additional tasks or users, the co-ordination mechanisms need a web browser-based client to run these jobs. A typical solution is to use the Common Gateway Interface (CGI) program. However, due to various reasons, this approach is not satisfactory. In a CG
14、I-based system, all are usually handled by the client task must be simulated by the CGI program. Increase the burden on the server. Another from the standard Internet browser access to client / server applications is invented by the Dossick and Kaiser 3. They have put forward a HTTP proxy to connect
15、 to the existing client / server network system. HTTP proxy to intercept HTTP requests for data and use the original set of requests for their transfer to the source system. The use of APIs is similar to Netscapes embedded browser-specific tools to create client / server system, browser-based client
16、 is feasible. However, the use of such APIs generated by the Web-based client software to limit the use of a proprietary platform, as well as a dedicated web browser.Unnecessary restrictions which offset a lot of clients to create Web-based benefits. 3. System Electronics and Telecommunications Rese
17、arch Institute (ETRI) has developed ERIS is called the reliability of information systems. It can be synthesized using a computer system failure rate and reliability of the calculation 4. ERIS clients include procedures by the two neutral components, they are different hardware platforms: workstatio
18、ns and personal computers. Not familiar with the UNIX environment, users will be inconvenient to use. Needs to be noted that the reliability of software tools made by Birolini. In order to become useful to the user software, as opposed to other requirements, a large enough database is very important
19、. In stand-alone environment, the user can have an independent data storage. This will be a waste of computer resources and time. Most existing tools are independent, to share data between users inconvenient. Based on the above in the ERIS test requirements and the views collected, we set the follow
20、ing elements: - Friendly user interface: man-machine interface for the effective handling large amounts of data is very important. At the same time, his understanding of the results of the analysis is very helpful. - Openness: information services must be widely used. Open the same end-users in the
21、reliability of the information can be used in the client easy access to other applications. - Data sharing: Once part of the data into the DBMS, then this data should be shared by other users. - User Management: User information is stored can effectively deal with the increase in users. - Security:
22、safe design must be appropriate to consider the design data in order to prevent the outside world open. Only those with only the correct user identification number (ID) and password of the user to enter the database server. Based on the above-mentioned requirements, ERIS functions of the development
23、 of the following. The system is divided into the following two categories: user / database management and reliability analysis. We are a combination of methods to connect to the Internet as well as the source client / server structure of the development of ERIS. Web browser in the display and forma
24、tting information can be used effectively for all users. Web browser management concepts used for ERIS. ERIS allows management through the users web browser application. Home users can apply for ERIS through the use of ID. Once his / her registration ID in the user database, he / she can be in any p
25、lace to download the client program ERIS. ERISs the realization of client similar to Windows program. Conducive to the server through the client to deal with the original function-specific applications. They have a better and easy to store a user-friendly interface, in order to merge the reliability
26、 of learning, provide them with a good query to the design process. Server process and client processes is in line with the TCP / IP protocol standard data requirements. ERIS provides me with Internet and client / server architecture of the composite structure. CGI and COM servers have two processes
27、. CGI solution components from a web browser client to issue the HTTP request and return the corresponding results. COM is to manage the process of data link request. There is a temporary database error filter components and user information. Only authenticated users and the information data can be
28、registered. UNIX server operating system is the use of workstations, the client is the PC. Informix database management system used to manage users and data. Server process through the ESQL / C language. Client through the MS Visual C + + and Delphi development tools for development. 4. Conclusion E
29、RIS is to design engineers and reliability analysts widely used development system. Succession through a combination of Internet and client / server structure of the concept, we have the scope in the design of the engine, set up quickly to understand the reliability of the design environment. Throug
30、h the use of the Internet, the distribution of time to install a tool to reduce a lot than before.ERIS also via the Internet to provide services to other organizations. Internet technology development and will stimulate popular Internet-based system to the traditional client / server system changes.
