History Table of Versioned Rows in Jamtland Collection

The table under consideration is a historical one, showcasing the evolution of data over time. It is part of a dataset collection that originates from 'Lantmäteriet' (The Land Survey) in Sweden. The table primarily tracks versions of data rows from its base table through two additional columns: one indicates the date of extraction from the data source and the other signifies the date a new version was extracted. When the latter column's value is null, it represents the most recent version of the row.

The table also contains a unique identifier formed by a combination of the extraction date and the row's position in the raw data. Additionally, it holds geographic information, initially in a shapefile format, representing geographical features as points, lines, or polygons, and later transformed into a final geographic format.

In terms of data analytics, the table's historical nature allows for trend analysis over time. For instance, changes in the geographical features can be tracked to assess environmental changes. Moreover, the version history can assist in data quality control, as it enables users to identify changes, anomalies, and potential errors in data over time. Lastly, the geographic data can be used to generate geographic visualizations, providing spatial context to the data and aiding in geographical analysis.