%0 Journal Article
%T A Unified Spatio-Temporal Data Model Based on State and Change<br>基于状态和变化的统一时空数据模型
%A ZHENG Kou gen
%A TAN Shi yu
%A PAN Yun he
%A <br>郑扣根
%A 谭石禹
%A 潘云鹤
%J 软件学报
%D 2001
%I 
%X In this paper, a unified spatio-temporal data model (SCUDM) based on state and change is proposed. A state in spatio temporal database is represented by a ternary tuple about object, space and time. Thus, a change in spatio temporal database is represented by a change over a state, which can be projected to object domain, space domain and time domain separately in order to explicitly represent change over object, space and time. An event in spatio temporal database is a relation of changes about spatio-temporal entities, implying the temporal topology of spatio-temporal entities. SCUDM model can support both representation of state and change and representation of spatial-temporal topology.
%K spatio temporal data model
%K spatio temporal database
%K spatio temporal semantic
%K state change
%K spatio temporal topology<br>时空数据模型
%K 时空数据库
%K 时空语义
%K 状态变化
%K 时空拓扑
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=7735F413D429542E610B3D6AC0D5EC59&aid=9916B43CCCDEA103&yid=14E7EF987E4155E6&vid=59906B3B2830C2C5&iid=9CF7A0430CBB2DFD&sid=35D8C930A8A0D2C6&eid=995E04834DE9F169&journal_id=1000-9825&journal_name=软件学报&referenced_num=7&reference_num=7