數(shù)據(jù)要求說明書（gb856t——88）doc

1、1引言.................................................................................................................................................21.1編寫目的................................................................

2、..............................................................21.2背景......................................................................................................................................21.3定義............

3、..........................................................................................................................21.4參考資料..........................................................................................

4、....................................22數(shù)據(jù)的邏輯描述.............................................................................................................................22.1靜態(tài)數(shù)據(jù)..........................................

5、....................................................................................32.2動(dòng)態(tài)輸人數(shù)據(jù)......................................................................................................................32.3動(dòng)態(tài)輸出

6、數(shù)據(jù)......................................................................................................................32.4內(nèi)部生成數(shù)據(jù)..........................................................................................

7、............................32.5數(shù)據(jù)約定..............................................................................................................................33數(shù)據(jù)的采集...................................................

8、..................................................................................33.1要求和范圍..........................................................................................................................33.2輸人的

9、承擔(dān)者......................................................................................................................43.3預(yù)處理............................................................................................

10、......................................43.4影響......................................................................................................................................42.1靜態(tài)數(shù)據(jù)靜態(tài)數(shù)據(jù)列出所有作為控制或參考用的靜態(tài)數(shù)據(jù)元素。2.2動(dòng)態(tài)輸人數(shù)據(jù)動(dòng)

11、態(tài)輸人數(shù)據(jù)列出動(dòng)態(tài)輸入數(shù)據(jù)元素（包括在常規(guī)運(yùn)行中或聯(lián)機(jī)操作中要改變的數(shù)據(jù)）。2.3動(dòng)態(tài)輸出數(shù)據(jù)動(dòng)態(tài)輸出數(shù)據(jù)列出動(dòng)態(tài)輸出數(shù)據(jù)元素（包括在常規(guī)運(yùn)行中或聯(lián)機(jī)操作中要改變的數(shù)據(jù)）。2.4內(nèi)部生成數(shù)據(jù)內(nèi)部生成數(shù)據(jù)列出向用戶或開發(fā)單位中的維護(hù)調(diào)試人員提供的內(nèi)部生成數(shù)據(jù)。2.5數(shù)據(jù)約定數(shù)據(jù)約定說明對(duì)數(shù)據(jù)要求的制約。逐條列出對(duì)進(jìn)一步擴(kuò)充或使用方面的考慮而提出的對(duì)數(shù)據(jù)要求的限制（容量、文卷、記錄和數(shù)據(jù)元的個(gè)數(shù)的最大值）。對(duì)于在設(shè)計(jì)和開發(fā)中確定是臨界性的限

12、制更要明確指出。3數(shù)據(jù)的采集數(shù)據(jù)的采集3.1要求和范圍要求和范圍按數(shù)據(jù)元的邏輯分組來說明數(shù)據(jù)采集的要求和范圍，指明數(shù)據(jù)的采集方法，說明數(shù)據(jù)采集工作的承擔(dān)者是用戶還是開發(fā)者。具體的內(nèi)容包括：a.輸入數(shù)據(jù)的來源，例如是單個(gè)操作員、數(shù)據(jù)輸入站，專業(yè)的數(shù)據(jù)輸入公司或它們的一個(gè)分組；b.數(shù)據(jù)輸入（指把數(shù)據(jù)輸入處理系統(tǒng)內(nèi)部）所用的媒體和硬設(shè)備。如果只有指定的輸入點(diǎn)的輸入才是合法的，則必須對(duì)此加以說明；c.接受者說明輸出數(shù)據(jù)的接受者；d.輸出數(shù)據(jù)的形