According to whether the object concerned has the attribute of time, the operations for spatio-temporal objects can be divided into two classes, one generated directly from the temporal types, and the other generated from the non-temporal types, which act on spatio-temporal objects at last after temporal lifting 根據(jù)操作對(duì)象是否具備時(shí)間屬性,時(shí)空對(duì)象的分析操作分為兩大類:一類是直接基于時(shí)態(tài)數(shù)據(jù)類型而產(chǎn)生的操作;另一類則是由產(chǎn)生于非時(shí)態(tài)數(shù)據(jù)類型、經(jīng)過(guò)時(shí)態(tài)提升后作用于時(shí)空對(duì)象的操作。