It is also about language for recording how the data relates to real world objects.
其二，是指将数据与现实世界对象关联的语言。
The physical data model is the real-world implementation of your data.
物理数据模型才是对数据的现实的实现。
This kind of performance is rarely acceptable in the real world of data warehousing.
在实际的数据仓库中，这样的性能是难以接受的。
Figure 10.1. Connecting your computer to the real world using data acquisition hardware.
图10.1。通过数据采集卡将你的电脑与现实环境相连。
The aim of establishing spatial data model is to reflect the real world.
空间数据模型建立的目的是反映现实世界。
The aim of establishing spatial data model is to reflect the real world.
空间数据模型建立的目的是反映现实世界。
应用推荐