Multi-level temporal data model in GIS
Yangguang Liu · Jisuanji gongcheng yu sheji · 2005
There is an increasingly requirement for dynamic geographic data representation, such as the lifecycle of geographic features.Temporal data management thus becomes an urgent necessity. When temporal data management being supported, systems based onrelational databases usually suffered problems from massive redundant data and data inconsistency. A multi-level approach was presentedthat solved these problems as well as the request for different temporal data scales. First, the common issues on timing models wereintroduced and the basic time-object architecture was defined. Then a temporal data model was built with different data scales and levels.An instance based on an object-oriented database demonstrates that this model is fully sufficient with temporal data management, whichhas considerable advantage on storage saving and data consistency.