Historical Versioning of Municipalities (1:1 000 000)

The 'table__history' is a critical component of the dataset collection 'tilastointialueet_kunta1000k'. Sourced from the Statistical Centre's (Tilastokeskus) website in Finland, this table is specifically designed to maintain the version history of its base table rows. The information in the table is organized around municipalities, as indicated by the base table content description: 'Municipalities (1:1 000 000)'.

The table comprises multiple columns, each serving a particular purpose in the data structure. For instance, there are columns that contain geographic information, which can be extremely valuable for geospatial data analytics. This could, for example, be used to track changes in municipal boundaries or to conduct spatial analyses related to population distribution. The geographic coordinates are presented using the WGS 84 coordinate reference system, with the axis order being longitude first, followed by latitude.

The table also includes specific columns that allow for the tracking of version history. The '_start_date' column contains the date when the row was extracted from the data source, and the '_end_date' column contains the date when a new version of the row was extracted from the data source. If the '_end_date' value is null, it indicates that the row is the most recent version. Combined with the '_row_number', which contains the number of the row in the raw data, these columns provide a unique identifier for each row in this version history table. This information could be used, for example, to track changes in municipal names over time or to monitor the evolution of geographic data.

In sum, the 'table__history' is a rich resource for both historical and geographic data analysis, providing valuable insights into the municipalities of Finland.