【正文】 邊緣數(shù)據(jù)，盡量做到系統(tǒng)的可靠性。從用戶的角度考慮，可能出現(xiàn)的操作錯(cuò)誤和數(shù)據(jù)輸入錯(cuò)誤，也都進(jìn)行了一系列的測(cè)試。針對(duì)系統(tǒng)各個(gè)功能模塊，對(duì)照功能的流程圖，對(duì)每一個(gè)操作都進(jìn)行了分析，得出了各種可能出現(xiàn)的情況，并對(duì)各種情況的不同處理進(jìn)行了測(cè)試，包括正常情況和錯(cuò)誤處理情況。 ○ 3 其他測(cè)試： 在系統(tǒng)的可移植性上，把編譯成可執(zhí)行文件的程序拿到不同的軟件環(huán)境和硬件平臺(tái)下進(jìn)行測(cè)試。對(duì)客戶機(jī) /服務(wù)器模式的工作情況進(jìn)行了測(cè)試，不只在本地機(jī)器，還在服務(wù)器上也進(jìn)行了測(cè)試。 由于測(cè)試的過(guò)程中，時(shí)間比較少，在測(cè)試的方法和測(cè)試用例的選擇方面可能還存在各種不足之處，系統(tǒng)的某些方面難免存 在不足或者漏洞，只能在現(xiàn)有的水平上來(lái)解決所有這些現(xiàn)有的問(wèn)題。 通過(guò)對(duì)基本數(shù)據(jù)的測(cè)試，發(fā)現(xiàn)了一些問(wèn)題，例如：輸入數(shù)據(jù)超過(guò)范圍，輸入數(shù)據(jù)類型不符，數(shù)據(jù)長(zhǎng)度不符等等，針對(duì)每一種錯(cuò)誤，進(jìn)行了相應(yīng)的錯(cuò)誤處理，在數(shù)據(jù)的安全性方面，系統(tǒng)增加了很多約束，例如：通過(guò)不可編輯的下拉單來(lái)防止用戶輸入非法的數(shù)據(jù)，通過(guò)灰化動(dòng)態(tài)文本框來(lái)保證數(shù)據(jù)的安全等等。 20 在測(cè)試系統(tǒng)的整個(gè)流程的過(guò)程中，針對(duì)系 統(tǒng)的不同分支結(jié)構(gòu)，不同功能模塊，都發(fā)現(xiàn)了或大或小的問(wèn)題，例如，退出窗口提示數(shù)據(jù)保存信息，非法用戶的越權(quán)操作，以及一些邏輯順序錯(cuò)誤。經(jīng)過(guò)多次修改并測(cè)試，基本能夠達(dá)到功能完備，無(wú)異常錯(cuò)誤，數(shù)據(jù)安全，用戶權(quán)限可靠等目的。將 GIS 技術(shù) 引入房 屋中介管理 ， 是對(duì)傳統(tǒng)房屋中介服務(wù)公司管理方式的巨大突 破 ， 它能有效地克服傳統(tǒng)中介 系統(tǒng) 只注重房屋自身屬性信息 ， 而不注重房屋周圍地理信息的缺點(diǎn) ， 從而給中介公司和客戶帶來(lái)極大方便 ， 也是GIS 技術(shù)應(yīng)用的一次成功嘗試。 本系統(tǒng)基本實(shí)現(xiàn)了房屋中介系統(tǒng)的各項(xiàng)功能，對(duì)于將 GIS 技術(shù)應(yīng)用于房屋中介系統(tǒng)進(jìn)行了研究，對(duì)今后更好地將 GIS 應(yīng)用于房屋中介系統(tǒng)積累了寶貴的經(jīng)驗(yàn)。參考文獻(xiàn) [1] 常淑娟 .后 “新政 ”時(shí)代的房屋中介發(fā)展之道 [J].中國(guó)房地信息 ,2021.(10 期 ):6667 [2] 田憲明 ,何渝 .基于 GIS 房屋中介系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn) [J].北京工商大學(xué)學(xué)報(bào) ,2021,23 卷 (3期 ):2338 [3] 基于 GIS 房屋中介系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn) [D]北京工商大學(xué)學(xué)報(bào) (自然科學(xué)版 ), 卷 (3 期 ) [4] 李恒凱 ,王秀麗 .基于 GIS 的房地產(chǎn)中介管理系統(tǒng)開(kāi)發(fā) [J].山西建 ,2021,34 卷 (3 期 )356 [5] 符小洪 ,江森華 ,林金堂 .基于組件式 GIS的福州市房地產(chǎn)查詢系統(tǒng) [J].閩江學(xué)院學(xué)報(bào) ,2021.(4期 ):6061 [6] 網(wǎng)址 : 我國(guó)房地產(chǎn)市場(chǎng)的發(fā)展趨勢(shì)和經(jīng)營(yíng)取向 [7] 網(wǎng)址 : 湘潭市綜合地理信息系統(tǒng)建設(shè)研究 .張必勝 [8] 常春麗 .淺析企業(yè)的信息管理與知識(shí)管理 [J].商場(chǎng)現(xiàn)代化 .2021(18 期 ):69 [9] 王駿 .基 于網(wǎng)絡(luò)的房屋中介系統(tǒng)的構(gòu)建與實(shí)施研究 [J].中國(guó)科技信息 2021.(22 期 ) [10] 網(wǎng)址 : 房地產(chǎn)市場(chǎng)與金融危機(jī) . 劉惠娜 [11] 網(wǎng)址 : 一個(gè)房屋中介業(yè)務(wù)建模的實(shí)例分析 [12] 唐大仕 .C程序設(shè)計(jì)教程 [M].清華大學(xué)出版社 ,2021 [13] 劉瑞新 .ASP 動(dòng)態(tài)網(wǎng)站開(kāi)發(fā) [M].機(jī)械工業(yè)出版社 ,2021 [14] 徐潔 磐 ,柏文陽(yáng) ,劉奇志 .數(shù)據(jù)庫(kù)系統(tǒng)實(shí)用教程 [M].高等教育出版社 ,2021 [15] 朱如龍 .Sql Server2021 數(shù)據(jù)庫(kù)應(yīng)用系統(tǒng)開(kāi)發(fā)技術(shù) [M].機(jī)械工業(yè)出版社 ,2021 [16] 李波 .Access2021 實(shí)用教程 [M].西安電子科技大學(xué)出版社 ,2021 [17] 吉根林 ,崔海源 .Web 程序設(shè)計(jì) [M].電子工業(yè)出版社 ,2021 [18] Microsoft Visual C 2021 Step by Step[M].Author:John Sharp 23 致 謝 1 專業(yè)譯文： 外文原文： Computer Program 1 Introduction Computer Program, set of instructions that directs a puter to perform some processing function or bination of functions. For the instructions to be carried out, a puter must execute a program, that is, the puter reads the program, and then follow the steps encoded in the program in a precise order until pletion. A program can be executed many different times, with each execution yielding a potentially different result depending upon the options and data that the user gives the puter. Programs fall into two major classes: application programs and operating systems. An application program is one that carries out some function directly for a user, such as word processing or gameplaying. An operating system is a program that manages the puter and the various resources and devices connected to it, such as RAM, hard drives, monitors, keyboards, printers, and modems, so that they may be used by other programs. Examples of operating systems are DOS, Windows 95, OS\2, and UNIX. 2 Program Development Software designers create new programs by using special applications programs, often called utility programs or development programs. A programmer uses another type of program called a text editor to write the new program in a special notation called a programming language. With the text editor, the programmer creates a text file, which is an ordered list of instructions, also called the program source file. The individual instructions that make up the program source file are called source code. At this point, a special applications program translates the source code into machine language, or object code—a format that the operating system will recognize as a proper program and be able to execute. Three types of applications programs translate from source code to object code: 2 pilers, interpreters, and assemblers. The three operate differently and on different types of programming languages, but they serve the same purpose of translating from a programming language into machine language. A piler translates text files written in a highlevel programming languagesuch as FORTRAN, C, or Pascal—from the source code to the object code all at once. This differs from the approach taken by interpreted languages such as BASIC, APL and LISP, in which a program is translated into object code statement by statement as each instruction is executed. The advantage to interpreted languages is that they can begin executing the program immediately instead of having to wait for all of the source code to be piled. Changes can also be made to the program fairly quickly without having to wait for it to be piled again. The disadvantage of interpreted languages is that they are slow to execute, since the entire program must be translated one instruction at a time, each time the program is run. On the other hand, piled languages are piled only once and thus can be executed by the puter much more quickly than interpreted languages. For this reason, piled languages are more mon and are almost always used in professional and scientific applications. Another type of translator is the assembler, which is used for programs or parts of programs written in assembly language. Assembly language is another programming language, but it is much more similar to machine language than other types of highlevel languages. In assembly language, a single statement can usually be translated into a single instruction of machine language. Today, assembly language is rarely used to write an entire program, but is instead most often used when the programmer needs to directly control some aspect of the puter’s function. Programs are often written as a set of smaller pieces, with each piece representing some aspect of the overall application program. After each piece has been piled separately, a program called a linker bines all of the translated pieces into a single executable program. Programs seldom work correctly the first time, so a program called a debugger is often used to help find problems called bugs. Debugg