The history table is a part of a dataset collection that stores versioned data of its base table. The base table represents AVI areas as mapped in 2021, which can be utilized in multiple ways, such as historical trend analysis, data validation, and geospatial data analytics. The table records each version of a row from the base table, preserving the state of data as it was at the time of extraction. This is particularly useful for tracking changes over time and analyzing historical data.
The columns of the table contain a wealth of information. For example, information on row versioning is provided by the '_start_date' and '_end_date' columns, which denote the lifespan of a specific version of a row. The '_row_number' column records the unique identification number of a row, which when combined with the '_start_date', provides a unique identifier for each row in this history table.
The table also includes a variety of geographical information encompassed within columns whose names start with 'geom_'. This data, represented in WGS 84 coordinate reference system, can be leveraged for geospatial data analytics, offering potential for in-depth geographical studies or location-based trend analysis.
The table further includes columns for names in different languages and a unique identifier for each AVI area, which could be useful for multilingual data analysis or linking data across different tables based on the unique identifier.
The data in this table is sourced from 'Tilastokeskus' (Statistics Finland), providing an authoritative and reliable source of information. The table can be a valuable resource for researchers and data analysts interested in studying historical trends in AVI areas, validating current data with past versions, conducting multilingual studies, or performing geospatial analysis.
