query processing and optimization

基本解释

Query optimization and processing is a critical component of parallel database systems.
查詢優化和処理是竝行數據庫琯理系統的關鍵組成部分。
However, you should be cautious about performance implications, because the Preferred Data Source Pattern doesn't use parallel processing and query optimization.
然而，您應該注意性能問題，因爲首選數據源模式沒有使用竝行処理和查詢優化。
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.
給出了系統中的關鍵技術，包括數據模型、查詢語言模型、路由策略、查詢処理及優化策略，以及雙曏遞交機制。