In the traditional database , the database is only supported relation database popularly . the gis database has not only attribute data but also spatial data 但这些传统意义上的数据不支持空间数据,而在地理信息系统的数据库不但有属性数据,还有空间数据。
The system adopts the c1ient / server mode , builds up the data structure for spatial and attribute date and connects spatial data and attribute data between each other 整个系统构架于客户服务器模式下,通过建立空间数据结构、属性数据库表结构以及空间数据和属性数据连接等方式来实现系统功能。
At the same time , system provide distributed searching function on attribute data for clients which make user using geographic information on different database server in network transparently 同时还提供用户对属性数据的分布式查询功能,使用户透明的利用网络上不同数据服务器中的地学信息。
Lastly , a oodbms is achieved for visualization in city 3d and information query system . the city space data and attribute data is managed in the oodbms . 7 将两者按照oodm的概念很好地组织管理起来,形成一个空间和属性数据一体化管理的应用于城市三维可视化和空间信息查询系统的面向对象数据库。
Practice for setting an upper confidence bound for a fraction or number of non - conforming items , or a rate of occurence for non - conformities , using attribute data , when there is a zero response in the sample 当样品中出现零反应时使用属性数据为不合格项的系数或数量或不合格发生率设定上置信限的实施规范