【正文】 coverage area wide advantage, build a based on C/S structure of work chat system, and provide the work service mainly to chat to satisfy the users, according to his own will and munication needs and convenient degree of pursuit, rich user39。 關鍵詞 ： C C/S 結構 數(shù)據(jù)庫 主程序 Abstract II Abstract With the development of work technology work chat technology is bee the industry and scientific research institutions close attention． Based on work chat technology in recent years has bee the emerging chat munication． Network chat is in the 1990s, it was developed in the original face to face for such information carrier by dynamic voice, on the basis of increased noncontact through the static text as the carrier type of munication． Its restrictive is lower, avoid the gleam of restraining factors in munication。其使用的 C/S 結構系統(tǒng)可以在任何一臺的計算機上使用， 系統(tǒng)的部署和維護只是在服務器上進行，這樣的模式既能減少管理的成本，更重要的是它能很方便的實現(xiàn)用戶與系統(tǒng)的交互，更快地響應用戶信息交互請求，加之微軟 C編程語言在窗體應用上的優(yōu)勢以及平臺的獨立性好、簡便的窗體生成為 C/S 的實現(xiàn)提供了很好的技術基礎 。 濰坊科技學院 本科畢業(yè)設計 （ 論文 ） 題 目 基于 .NET的在線聊天系統(tǒng) 院（系） 中印計算機軟件學院 專業(yè) 計算機科學與技術 學 號 202001450006 學生姓名 紀 連 文 指導教師 祝 凌 云 起訖日期 設計地點 濰坊科技學院 摘要 I 摘 要 隨著網(wǎng)絡技術的不斷發(fā)展，網(wǎng)絡聊天技術正成為目前產(chǎn)業(yè)界和科研機構密切關注的焦點 。 本系統(tǒng)前臺選用了 C等作為主要的編程工具和語言 ,后臺選用 SQL Server2020 作為數(shù)據(jù)庫服務器。 Chat system is providing these services with dynamic interaction function of the management information system, it achieved a work of online chat。s work life and daily munication means, will gets more and more users favor． Keywords: C C/S structure DateBase MainProcess 目錄 III 目 錄 摘 要 ................................................................................................................................................. I 目 錄 ..............................................................................................................................................III 第 1 章 緒論 .................................................................................................................................... 1 1． 1 選題背景及意義 .................................................................................................................. 1 1． 2 網(wǎng)絡聊天簡介 ...................................................................................................................... 1 1． 3 系統(tǒng)設計思想 ...................................................................................................................... 1 1． 4 可行性分析 ......................................................................................................................... 2 1． 5 系統(tǒng)運行環(huán)境 ...................................................................................................................... 2 第 2 章 相關技術概述 ........................................................................................................................ 3 2． 1 客戶端 /服務器（ Client/Server）結構概述 ............................................................................ 3 2． 2 SOCKET 編程技術 .............................................................................................................. 3 SQL Server 2020 概述 ............................................................................................................. 4 ADO． NET 技術 .................................................................................................................... 4 第 3 章 需求分析 ............................................................................................................................... 5 3． 1 系統(tǒng)需求分析 ........................................................................................................................ 5 3． 2 系統(tǒng)功能需求 ........................................................................................................................ 5 3． 3 數(shù)據(jù)處理需求 ........................................................................................................................ 6 3． 4 系統(tǒng)性能需求 ........................................................................................................................ 6 第 4 章 系統(tǒng)分析與設計 .................................................................................................................... 7 4． 1 系統(tǒng)功能模塊設計 ................................................................................................................. 7 系統(tǒng)模塊詳細設計 .................................................................................................................. 7 客戶端功能模塊設計 ........................................................................................................ 7 服務器端功能模塊設計 ....................................................................................................10 系統(tǒng)整體流程圖 ....................................................................................................................10 第 5 章 數(shù)據(jù)庫設計 .........................................................................................................................13 概述 ......................................................................................................................................13 數(shù)據(jù)庫概念結構設計 .............................................................................................................13 數(shù)據(jù)庫邏輯結構設計 .............................................................................................................14 用戶信息實體屬性圖 .......................................................................................................14 用戶好友關系信息實體屬性圖 .........................................................................................14 數(shù)據(jù)表設計 ................................................................................................