基于WEB 的ORACLE數(shù)據(jù)庫

1、1234567實例實例實踐實踐理論理論891011121314151617現(xiàn)實世界現(xiàn)實世界信息世界信息世界數(shù)據(jù)世界數(shù)據(jù)世界181920212223242526272829303132333435363738394041424344454647瀏覽器端瀏覽器端請求請求 響應(yīng)響應(yīng)服務(wù)器端服務(wù)器端HTML網(wǎng)頁網(wǎng)頁48瀏覽器端瀏覽器端請求請求 響應(yīng)響應(yīng)HTML網(wǎng)頁網(wǎng)頁處理處理服務(wù)器端服務(wù)器端程序程序49503種數(shù)據(jù)庫的性價比種數(shù)據(jù)庫的性價比 MySQLSQL ServerOracle全免費費用按連接計算，費用較高按計算機主頻計算，費用較高Linux免費NT，價格較高Linux全免費；windowsNT

2、、Solaris價格較高較快快最快較大較大大較好好最好5152535455InternetWeb客戶機Web服務(wù)器ApacheODBC數(shù)據(jù)庫服務(wù)器5657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117 A B118AB1191201211221231241251261271281291301311321331341351361371381391401411421431

3、44145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190大型存儲區(qū)Java存儲區(qū)重做日志緩沖區(qū)數(shù)據(jù)庫共享區(qū)庫高速緩存數(shù)據(jù)字典高速緩存系統(tǒng)全局區(qū)（SGA）共享存儲區(qū)191192193194195排序區(qū)堆棧空間會話信息PGA196197198199200201202干凈緩沖區(qū)臟數(shù)據(jù)寫入磁盤20320420520620720820921021121221321421521621721821922022122222322422522622722822923023123223323423523623723823924024124224324424524624724824925025125225325425525625725825926026126226326426526626726826927027127227327427527627727827928028128228328428528628728828929029129229329429529629729829930030130230330430530630730830931