如果考虑面向对象是何时成为主流的，我们就可以设想，现在绝大多数30出头或更年轻的程序员已经被训练成以这种方式来思考了。

If we consider when object-orientation became mainstream, we can assume that most, if not all, programmers in their early thirties or younger have been trained to think this way.

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本文介绍应用面向对象的思想对专题地图数据厍中专题数据、几何数据、拓朴数据进行有效管理的设想。

This paper tells us the conceive plan about effective management according to thematic data. geometrical data and topological data which is based on the theory of Object Oriented Database.

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