【正文】 icult tasks in accessing and analyzing data. Most data are accumulated in the system development site apart from the reliability analyst39。s possibilities to easily integrate reliability information into other application for use in the client station. Data sharing : Once the ponent data had been entered into DBMS, then the data should be shared with other users. User management : User information database will efficiently handle the increasing number of users.Security : An appropriate security must be considered to prevent the design data being opened to the users who have correct identification number (ID) and password can access server database. Based on the above requirements, the ERIS has been developed with following characteristics. The functions of the system are classified by two categories: user/ponent database management and reliability analyses.We applied the bined WWW method of access and legacy client/server architecture to ERIS. Web browser is monly used efficiently by the general users in displaying and formatting information retrieved from a server database. ERIS applied the web browser concept in user management. Users can request an ID for use of the ERIS through homepage. Once he/she39。藉由系統(tǒng)開發(fā)，設計工程師和可信度分析家可以更為方便快捷地對系統(tǒng)的可靠性進行分析。在成份數(shù)據(jù)中, 計算機每個成份的故障率時，特定應用數(shù)據(jù) ( 舉例來說,應用的重要程度，功能引腳的數(shù)字,等等.)對于系統(tǒng)開發(fā)者的設計來講都是很重要的?；ヂ?lián)網發(fā)展成為了支持交互式數(shù)據(jù)顯示及分發(fā)的傳輸手段。第二章概述了客戶端/服務器計算的互聯(lián)網響應。Lyu(1995)論證了客戶端/服務器結構的四項優(yōu)勢：成本降低、生產率提高、系統(tǒng)生命周期較長以及更好的可用性。在網絡瀏覽器作為客戶端存取一個已存在的客戶端/服務器系統(tǒng)的平臺時，只有一類系統(tǒng)代碼（HTML和幫助代碼）需要維護。在一個基于CGI的系統(tǒng)中，所有通常由客戶端處理的任務必須由CGI程序模擬。HTTP代理攔截HTTP數(shù)據(jù)請求，并使用原始設定把他們的請求轉移向源系統(tǒng)。3. 系統(tǒng)實施 電子電信研究所(ETRI)開發(fā)了叫做ERIS的可靠性信息系統(tǒng)。 需要特別指出的是可靠性軟件工具是由Birolini提出的。大多數(shù)現(xiàn)有工具都是獨立的，用戶之間共享數(shù)據(jù)非常不方便。開放性同樣體現(xiàn)在終端客戶的可靠性信息能夠被此客戶端使用的其他應用輕松獲得。只有擁有唯一正確的用戶識別號碼(ID)和密碼的用戶才能進入數(shù)據(jù)庫服務器。網絡瀏覽器在顯示及格式化信息時能夠被所有用戶有效使用。一旦他/她的ID在用戶數(shù)據(jù)庫注冊，他/她能夠在任何地方下載ERIS客戶端程序。服務器進程和客戶端進程的聯(lián)系，是符合TCP/IP協(xié)議的標準數(shù)據(jù)要求的。COM是管理數(shù)據(jù)請求的聯(lián)系進程。Informix數(shù)據(jù)庫管理系統(tǒng)用來管理用戶及數(shù)據(jù)。通過結合互聯(lián)網和繼承客戶端/服務器結構的概念，我們在設計引擎的范圍，建立了可迅速理解的可靠性設計環(huán)境。參考資料 1. J. Lyu. On Developing an Inventory Management System in the Client/Server Environment. Computers andindustrial engineering, 29, 9397 (1995).2. R. Orfali, D. Harkey and J. Edwards. Essential Client~Server Survival Guide, Van Nostrand Reinhold, NY (1994).3. E. S. Dossick and . Kaiser. Wt~VW access to legacy client/server applications. Computer Networks and ISDNSystems, 28, 931940 (1996).4. M. K. JEONG, S. Y. LEE, C. O. JEONG and J. S. KOH. ERIS : A Reliability Design Tool forTelemunication Systems. Computers and industrial engineering, 30, 523530 (1996).5. A. Birolini. Quality and Reliability of Technical Systems. SpringerVerlag, NY (1994).。ERIS同樣可以通過互聯(lián)網為其他組織提供服務?？蛻舳顺绦蛲ㄟ^MS Visual C++及Delphi開發(fā)工具進行開發(fā)。只有認證用戶及信息數(shù)據(jù)才可以被注冊。服務器擁有CGI和COM兩個進程。他們通過利于服務器的原始客戶端處理專用應用功能。ERIS允許通過用戶管理提出的網絡瀏覽器申請。該系統(tǒng)分為以下兩類：用