日前,北京市地名数据库如期建成。该数据库具有三个特点,一是收录地名数据全,市域范围内的47类、20余万条地名数据尽皆入库;二是空间定位准,以上各类地名皆准确定位在北京市坐标系统的地图上;三是文化性、历史性强,历史、现状和规划三种时态的地名无一遗漏。北京市 Recently, Beijing city names database completed on schedule. The database has three characteristics, one is to include the names of the entire data, within the scope of the city of 47 categories, more than 200,000 place names data warehousing; second is the spatial positioning of the above types of names are accurate positioning of the Beijing coordinate system On the map; Third, cultural, historic, history, status and planning of the three tense no omission of place names. Beijing city