例句與造句

1. The modification in ldb will cause the global view to be changed , so we have to do view maintenance in multidatabase with materialized views when the ldb changes . most of the existing view maintenance algorithms only consider the views defined by select project join ( spj ) queries
   底層關(guān)系的修改會導(dǎo)致全局視圖的改變，因此，在保存物理視圖的多庫系統(tǒng)中，當(dāng)?shù)讓雨P(guān)系發(fā)生變化時，要對全局視圖進(jìn)行視圖維護(hù)，使其與底層關(guān)系保持一致，這就是多庫系統(tǒng)中的全局視圖維護(hù)問題。
2. It's difficult to find project join in a sentence. 用project join造句挺難的