boolean queries 中文意思是什麼
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Traditional search engines are based on information retrieval technologies. they implement operations such as boolean queries, proximity searches, text relevance and link analysis
自己簡單翻譯一下：傳統的搜索引擎是基於信息檢索技術。他們執行諸如布爾查詢的操作，近似搜索，正文關聯和連接分析。 -
While a predefined action only permits subscribers to specify parameter values for developer - defined queries, a condition action allows a subscriber to create the equivalent of a where clause for the query, using boolean operators and, or, and not to combine individual conditions
預定義操作僅允許訂閱方為開發人員定義的查詢指定參數值，而條件操作則允許訂閱方通過使用布爾運算符（ and 、 or和not ）組合各個條件，為查詢創建等效的where子句。
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