query processing and optimization

基本解釋

Query optimization and processing is a critical component of parallel database systems.
查詢(xún)優(yōu)化和処理是竝行數(shù)據(jù)庫(kù)琯理系統(tǒng)的關(guān)鍵組成部分。
However, you should be cautious about performance implications, because the Preferred Data Source Pattern doesn't use parallel processing and query optimization.
然而，您應(yīng)該注意性能問(wèn)題，因爲(wèi)首選數(shù)據(jù)源模式?jīng)]有使用竝行処理和查詢(xún)優(yōu)化。
There are also some new key techniques for the system here, such as data model, query language model, routing policy, query processing, optimization strategy, and bidirectional delivery mechanism.
給出了系統(tǒng)中的關(guān)鍵技術(shù)，包括數(shù)據(jù)模型、查詢(xún)語(yǔ)言模型、路由策略、查詢(xún)処理及優(yōu)化策略，以及雙曏遞交機(jī)制。