query processing and optimization

基本解釋

Query optimization and processing is a critical component of parallel database systems.
查詢優(yōu)化和處理是并行數(shù)據(jù)庫管理系統(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)該注意性能問題，因為首選數(shù)據(jù)源模式?jīng)]有使用并行處理和查詢優(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、查詢語言模型、路由策略、查詢處理及優(yōu)化策略，以及雙向遞交機制。