If the information is required to be in a standard DTD-like attribute type such as ID, IDREF, or ENTITY, use an attribute.

如果信息需要作为类似标准DTD的属性类型，如ID、IDREF或ENTITY，则使用属性。

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Fields are the basic units of data storage, and each field typically contains information pertaining to one aspect or attribute of the entity described by the database.

域是数据存储的基本单位，每个域一般含有由数据库描述的属于实体的一个方面或一个特性的信息。

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A geo-spatial entity which can be organized from geometric data, symbol data, entity data, attribute data is regarded as an object to the object oriented geographical information model.

面向对象的地理信息模型以地理空间实体为对象，地理实体可以从几何数据、符号数据、实体数据、属性数据的角度来进行数据的组织。

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