摘要
在分析国内外地籍管理信息系统和地籍数据库模型的基础上,分析了地籍业务事件的特点及其对时空地块状态变化的影响规律,提出了一种地籍业务联动更新的地籍数据库模型:对象-事件模型,通过将地籍数据对象化、地籍业务事件化,建立对象、事件间的关联关系,实现地籍业务与地籍数据联动更新。根据对象-事件模型原理,对地籍对象、事件进行提取,设计地籍数据库,并在此基础上构建了成都市地籍管理信息系统。
Cadastral data are the core contents in land management, so the database design is the focus of cadastral management information system. With the rapid economic development, unreasonable land utilization and frequent changes of cadastral information make it hard to conduct the land management. Based on the analysis of the current situation of domestic and international land management information systems and cadastral database models, the characteristics of events and how they impact the states of spatial objects is analyzed and the changing is put forward in this paper. Cadastral database model named object-events model is designed,which treats cadastral data as object and treats cadastral operation as event to establish the correlation between objects and events. Cadastral objects include spatial objects such as clan and attribute objects （such as clan obligee）. Cadastral events are complex events,which make the event states constantly change. According to the different changes of cadas tral events, the events can be classified into attribute events and spatial events. The core of land management is to get the basic information of cadastral,i, e. the attribute and state of cadastral objects. Because the changes of the information of objects are driven by cadastral events,it is events that make cadastral objects change in terms of operations. Cadastral database has three levels, which are current database,history database and intermediate database. Through establishing the target relationship between the object and event, this approach upgrades cadastral operation and data in synchronism. The model focuses on the target of land certificate,deploys system of events to record and track cadastral data,and records in detail the whole changing process of land certificate. The object-events model can not only express the space-time relation of features but also link with the operations, which makes it easy for database to realize it. According to the principle of object-events model, the cadastral objeets and events are collected and the cadastral database is elaborately designed. Based on that, Chengdu cadastral management information system is established.
出处
《地理与地理信息科学》
CSSCI
CSCD
北大核心
2010年第1期44-47,共4页
Geography and Geo-Information Science
基金
国土资源部试点项目(2006S01)
