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GIS Navigation Boosted by Column Stores

机译:列存储助力GIS导航

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Earth observation sciences, astronomy, and seismology have large data sets which have inherently rich spatial and geospa-tial information. In combination with large collections of semantically rich objects which have a large number of thematic properties, they form a new source of knowledge for urban planning, smart cities and natural resource management. Modeling and storing these properties indicating the relationships between them is best handled in a relational database. Furthermore, the scalability requirements posed by the latest 26-attribute light detection and ranging (LI-DAR) data sets are a challenge for file-based solutions. In this demo we show how to query a 640 billion point data set using a column store enriched with GIS functionality. Through a lightweight and cache conscious secondary index called Imprints, spatial queries performance on a flat table storage is comparable to traditional file-based solutions. All the results are visualised in real time using QGIS.
机译:地球观测科学,天文学和地震学拥有大量数据集,这些数据集固有地具有丰富的空间和地理空间信息。结合具有大量主题属性的大量语义丰富的对象,它们形成了城市规划,智慧城市和自然资源管理的新知识来源。对这些属性进行建模和存储以指示它们之间的关系最好在关系数据库中进行处理。此外,最新的26属性光检测和测距(LI-DAR)数据集提出的可伸缩性要求对于基于文件的解决方案构成了挑战。在此演示中,我们演示如何使用具有GIS功能的列存储来查询6400亿点数据集。通过一个称为Imprints的轻量级且具有缓存意识的二级索引,在平板存储上的空间查询性能可与传统的基于文件的解决方案相媲美。使用QGIS实时显示所有结果。

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