Extending Object-relational Database to Support Spatio-temporal Data*

Object-Relational Database (ORDB) techniques are developed rapidly in recent years and widely used for spatial data storage and manipulation. The ORDB has strong basis both on theories and applications, and if well extended, it can also be used to handle spatio-temporal data. Although ample research on spatio-temporal data modeling has been performed, very little work exists on how to implement a spatio-temporal information inside an ORDB. This paper aims at building spatio-temporal database system from design to implementation via extending object-relational database, including design spatio-temporal object model and a general spatio-temporal data model, then implement a spatio-temporal information system based on these model proposed, last a case study on practical spatio-temporal data handle examined. * Supported by the Chinese National Fundamental Surveying and Mapping Project Foundation of China under Grant No.1460130524207; the National High-Tech Research and Development Plan of China under Grant Nos.2006AA12Z214; the National Grand Fundamental Research 973 Program of China under Grant No. 2006CB701304; the Open Foundation of Key Laboratory of Geo-information of SBSM of China under Grant No.B2618.