【正文】 .................................... 8 第 3 章 系統(tǒng)分析 ................................................................................................................. 9 概述 ........................................................................................................................... 9 系統(tǒng)分析的原則 ................................................................................................. 9 系統(tǒng)分析的方法 ................................................................................................. 9 現(xiàn)行系統(tǒng)分析 .............................................................................................................10 現(xiàn)行系業(yè)務(wù)流程分析 .........................................................................................10 現(xiàn)行系統(tǒng)數(shù)據(jù)流程分析 .....................................................................................10 IV 現(xiàn)行系統(tǒng)存在的問(wèn)題 ......................................................................................... 11 新系統(tǒng)邏輯設(shè)計(jì) ......................................................................................................... 11 新系統(tǒng)目標(biāo) ....................................................................................................... 11 精品課網(wǎng)站管理信息系統(tǒng)業(yè)務(wù)流程分析 .............................................................12 精品課網(wǎng)站管理信息系統(tǒng)數(shù)據(jù)流程分析 .............................................................16 數(shù)據(jù)字典 ....................................................................................................................22 數(shù)據(jù)元素定義 ...................................................................................................23 數(shù)據(jù)存儲(chǔ) ..........................................................................................................26 數(shù)據(jù)流 ..............................................................................................................28 處理功能 ..........................................................................................................30 外部實(shí)體 ..........................................................................................................32 數(shù)據(jù)存儲(chǔ)結(jié)構(gòu)規(guī)范化 ..................................................................................................33 不滿足 3NF范式的數(shù)據(jù)存儲(chǔ)結(jié)構(gòu) ......................................................................33 數(shù)據(jù)立 即存取分析 .....................................................................................................34 有關(guān)學(xué)生信息的立即存取分析 ...........................................................................34 有關(guān)論壇的立即存取分析 ..................................................................................34 有關(guān)試題的立即存 取分析 ..................................................................................35 系統(tǒng)數(shù)據(jù)分析 .............................................................................................................36 處理功能描述 .............................................................................................................37 系統(tǒng)分析的遺留問(wèn)題 ..................................................................................................40 第 4 章 系統(tǒng)設(shè)計(jì) ............................................................................................................... 41 ..........................................................................................................................41 ..................................................................................................41 系統(tǒng)設(shè)計(jì)的原則 .............................................................................................41 ..............................................................................................42 計(jì)算機(jī)系統(tǒng)配置 ........................................................................................................42 .........................................................................................................42 .........................................................................................................43 ....................................................................................43 .........................................................................................................43 系統(tǒng)總體結(jié)構(gòu)設(shè)計(jì) ....................................................................................................43 ................................................................................................................48 、數(shù)據(jù)管理、資源管理子系統(tǒng)數(shù)據(jù)庫(kù)設(shè)計(jì) ...................................48 .............................................................................52 ..................................................................52 .........................................................................53 ...................................................................................................................53 ..................................................................................................53 .........................................................................................................54 V ............................................................................................................54 .........................................................................54 ...........................................................................................58 ..................................................................................................61 ....................................................................................62 .......................................................................................66 ...................................................................................................................69 ............................................................................................................69 ..............................................................................................69 的后備及