From the discussed functions and predicates, we give some applications of spatio-temporal query language 文章還介紹了時空查詢語言stql,并分類例示共應(yīng)用。
Firstly, the extension methods and principles of atsql2, which is a temporal query language, are discussed 然后以timedb為基礎(chǔ),通過以下三個步驟,深入分析和研究時態(tài)數(shù)據(jù)庫管理系統(tǒng)的實現(xiàn)技術(shù)。
We also introduce the spatio temporal query language which is defined in the stadbsii system, and give some applications of stql 文章還介紹了在stadbsii系統(tǒng)中定義的時空查詢語言stql,并分類例示其具體的應(yīng)用。