MAPQUERY:用于检索几何数据及其图形表示的数据库查询语言

Proceedings of the 9th annual conference on Computer graphics and interactive techniques Pub Date : 1982-07-01 DOI:10.1145/800064.801281

André Frank

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引用次数: 91

摘要

地理数据的存储是数据处理中的一种日益增长的应用类型。用户希望检索存储的部分数据，并以图形形式显示它们。他们需要一种简单而灵活的查询语言来选择所需的数据并描述表示形式。如果不进行修改，现有的查询语言无法满足此目的。本文提出了一种自适应的建议，并给出了查询公式的一些示例。此外，还讨论了图形输入和输出的特殊问题。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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MAPQUERY: Data base query language for retrieval of geometric data and their graphical representation

The storage of geographical data is a growing type of application within data processing. Users want to retrieve parts of the data stored and to have them shown in graphical form. They need an easy and flexible query language to select the data needed and to describe the form of representation. The existing query languages do not suit this purpose without amendments. This paper presents a proposal for adaptation and gives some examples for query formulation. Moreover, it discusses the special problems of graphical input and output.

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Proceedings of the 9th annual conference on Computer graphics and interactive techniques

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