A generalized model for a relational temporal database
SIGMOD '88 Proceedings of the 1988 ACM SIGMOD international conference on Management of data
SIGMOD '85 Proceedings of the 1985 ACM SIGMOD international conference on Management of data
A query language for a homogeneous temporal database
PODS '85 Proceedings of the fourth ACM SIGACT-SIGMOD symposium on Principles of database systems
A Lineage MetaData Model for the Temporal Management of a Cadastre Application
DEXA '99 Proceedings of the 10th International Workshop on Database & Expert Systems Applications
Research on the efficiency of querying historical data with the spatio-time data integration method
Mathematical and Computer Modelling: An International Journal
Hi-index | 0.98 |
The integration of time and space is the key to the research on Temporal Geographic Information System (TGIS). This paper will do some research on the integration method of spatio-temporal data at the spatial database level combining with requirements of cadastral management. Firstly, making analysis on the widely used integration method regarding time as attribute and its corresponding query method, the author thinks that there are some disadvantages on the expression of time semantics and efficiency of querying historical data in this algorithm. Taking these disadvantages into consideration, a new integration method, a time-based integration method, is proposed. In this method, time, as the independent time sequence, becomes the organizational basis for recording changes and intuitionally records the changing process of each spatial entity as time changes. Compared to the method regarding time as attribute, the time-based integration method can express time semantics better and provides a solution for improving backtracking query efficiency by reducing times of backtracking query.