evolution n. 1.發(fā)展,發(fā)育;開展。 2.(氣體等的)放出;散出,放出物,散出物。 3.發(fā)生;演變;【生物學(xué)】演化,進化;進化論(opp. creationism)。 4.【生物學(xué)】種族發(fā)生,系統(tǒng)發(fā)育;個體發(fā)生;個體發(fā)育。 5.【天文學(xué)】(天體)形成。 6.【數(shù)學(xué)】開方。 7.〔軍〕按計劃行動,位置變換。 8.(跳舞等的)規(guī)定動作。 an evolution unit 〔軍〕機動單位。 the theory [doctrine] of evolution 進化論。 -al, -ary adj. 發(fā)展的;進化(論)的;展開的。 n. -ism 進化論,進化主義 (opp. creationism)。
Better management of schema evolution due to changing business requirements 更好地管理因為更改業(yè)務(wù)需要而發(fā)生的模式演化
An advantage of intact storage is that any schema evolution due to changes in the purchase order additional information like shipping, is painless 完整存儲的好處是任何由于采購訂單的變化(如運輸?shù)绕渌畔ⅲ┒l(fā)生的模式演化都不會有什么影響。
We will also look into the effects of changes in the business requirements on the data schema evolution and its impact on the application code and the relational schema 還將講述業(yè)務(wù)需求更改對數(shù)據(jù)的影響(模式演化)以及對應(yīng)用程序代碼和關(guān)系模式的影響。
However, the gain in relational storage simplicity and schema evolution is offset by reduced query performance, as we will see when we try to create a purchase history report 但是,關(guān)系存儲的簡單和模式演化的好處會被查詢性能的降低所抵消,當(dāng)我們嘗試創(chuàng)建采購歷史記錄報告時會發(fā)現(xiàn)這一點。
This article looks at the impact of schema evolution on the application and walks the reader through a usage scenario to illustrate the ease of setting up a php environment; the ease of integrating db2 native xml functionality with php applications, including web services written in php and xquery; and the benefit of pushing the business logic and data transformations into the database, using xquery, stored procedures, and views 本文講述了模式演化對應(yīng)用程序的影響,并通過使用情景向用戶說明設(shè)置php環(huán)境的容易程度;將db2原生xml功能與php應(yīng)用程序(包括用php和xquery編寫的web服務(wù))集成的容易程度;使用xquery、存儲過程和視圖將業(yè)務(wù)邏輯和數(shù)據(jù)轉(zhuǎn)換放到數(shù)據(jù)庫中的好處。