在该部分，以ORACLESPATIAL为例，讨论了矢量数据模型的简单数据结构；
The simple data structure of vector model is introduced using the ORACLE SPATIAL as an example.
该库为编程人员提供了通用的数据模型，包括所有栅格数据格式和矢量数据格式（通过OGR）。
The library gives programmers a common data model covering all raster data formats and -- through OGR -- vector data formats.
有两种主要的数据模型可选择：栅格和矢量。
There are two major choices of data model: raster and vector.
分析了矢量电子地图的现状，对采用面向对象的数据模型和数据结构实现矢量电子地图进行了研究。
This paper analyzes the current situation of vector electronic map and investigates the realization of vector electronic map with object-oriented data model and structure.
本文讨论电子政务中基于XML的空间数据交换格式的设计目标、遵循原则、数据模型和矢量数据交换格式中的关键点。
This paper discusses the designed target, followed rules, data models and key points about spatial data exchange format which is based XML and will be used in electronic government.
本文讨论电子政务中基于XML的空间数据交换格式的设计目标、遵循原则、数据模型和矢量数据交换格式中的关键点。
This paper discusses the designed target, followed rules, data models and key points about spatial data exchange format which is based XML and will be used in electronic government.
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