Version History of Aerial Photography Records

The 'utfall_ortofoto_senaste__history' table is a part of the 'utfall_ortofoto_senaste_shape' dataset collection. It serves as a history table, maintaining the version history of individual rows from its base table. Unique identification of each row in this version history table is achieved through a combination of the start date of extraction and the row number in the raw data. The table includes two additional columns compared to its base table, specifically the start and end dates of data extraction. A row is considered the most recent version if its end date value is null. The table's data is sourced from the website of 'Lantmäteriet' in Sweden.

The history table incorporates geographical information as well, which was originally in shapefile format, a common geospatial vector data format for geographic information system (GIS) software. It stores the geometric location and attribute information of geographic features that can be represented by points, lines, or polygons. This geographic information has been converted into a final geographic format for this dataset.

In terms of data analytics, this table can be quite valuable. For instance, it could be used to track changes in geographical features over time, as it maintains a history of each row. Additionally, by utilizing the start and end dates, an analyst could examine specific periods for trends or significant changes. Moreover, by leveraging the geographical information, spatial analysis could be performed to reveal patterns and relationships that might not be apparent in non-spatial data.