所以说，与那些只能间接构成图架构的数据库不同，图形数据库可以明确地表示图。

So unlike other database approaches which only implicitly can form a graph structure a graph database explicitly represents a graph.

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以TM 影象为信息源，在全数字方式下运用遥感技术与地理信息系统技术结合建立了甘肃省沙地的TM 图象数据库、图形数据库和属性数据库。

Using digital processing method of remote sensing and GIS, TM images in 1996 are interpreted and the database of the sandy land in Gansu province is established.

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