Historical Version Records of Base Table Data

The 'sheet_1__history' table is a historical record sourced from 'Lantmäteriet' (The Swedish National Land Survey) in Sweden. It is a specialized table that not only contains the data of its base table but also includes version history of each row. This history is tracked through two additional columns that record the start and end dates of each row's validity. The start date signifies when the row was first extracted from the data source, while the end date indicates when a new version of the row was extracted. If the end date is null, it signifies that the row represents the most recent version of the data.

The table incorporates a wide array of columns, each representing different aspects of the data. An interesting attribute of this table is that each row is uniquely identified by a combination of the start date and the row number, which is a count of the raw data extracted from the source.

This table can be particularly useful in data analytics for tracking changes over time. For instance, it can help in identifying trends and patterns in the data, analyzing the frequency of changes, and pinpointing the exact time periods of these changes. Moreover, the data from this table could also be used to perform historical data analysis, compare and contrast different versions of the data, or even to create predictive models based on the historical data trends.