Historical Versioning of AVI Areas 2022 (Scale 1:4,500,000)
The history table, belonging to a dataset collection, is a rich resource of data, focusing on version histories of base table rows. Originating from Finland's 'Tilastokeskus' (Statistics Finland), the table presents a trove of data points, from geographical information to unique identifiers.
The data can be viewed through a chronological lens with the help of '_start_date' and '_end_date' columns, marking the inception and conclusion of a given row's version. In instances where '_end_date' is null, it signifies the row as the most recent version.
Geographical data offered by columns beginning with 'geom_', allows for granular analysis of data points. These columns provide geographic information, using the WGS 84 coordinate reference system, with the axis order being longitude first, followed by latitude. This allows for precision in geospatial data analytics, enabling users to pinpoint data in a geographic context.
Each row, marked with a unique '_row_number', serves as a unique identifier. This is coupled with the '_start_date', forming a unique combination that identifies each row in the version history table.
The table also contains a more descriptive set of columns, with 'name', 'namn', 'nimi' providing the English, Swedish and Finnish names for each row. The 'vuosi' column presents the year in question, while the 'avi' and 'id' columns provide additional identifiers.
This table could be used in a variety of data analytics contexts. For instance, tracking changes over time would be straightforward with the timestamp data provided. Geospatial analysis could be conducted using the geographic data, enabling detailed geographic visualizations, predictive modeling based on geographic factors, or other spatial analytics. The multilingual names would allow for region-specific analyses as well.
Field Descriptions
Name | Data type | Description |
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_start_date | date | The date when the row was extracted from the data source. This, along with '_row_number', uniquely identifies each row in the version history table. |
_end_date | date | The date when a new version of the row was extracted from the data source. A null value indicates that the row is the most recent version. |
_row_number | long | The number of the row in the raw data extracted from the data source. This, along with '_start_date', uniquely identifies each row in the version history table. |
avi | string | A string identifier, possibly representing a region or district code. |
geom_geojson | string | Contains geographic data in the format of GeoJSON, a common format for encoding a variety of geographic data structures. |
geom_geotext | string | Contains geographic data in a textual format, possibly including polygon or multipolygon representations of geographic areas. |
geom_type | string | Specifies the type of the geographic data, such as 'ST_MULTIPOLYGON' or 'ST_POLYGON'. |
geom_centroid | string | Contains the point representing the geometric center, or centroid, of the geographic area. |
geom_center_x | double | The x-coordinate of the geometric center of the geographic area. |
geom_center_y | double | The y-coordinate of the geometric center of the geographic area. |
gml_id | string | A unique string identifier for the row. |
id | long | An integer identifier for the row. |
name | string | The English name of the entity represented by the row. |
namn | string | The name of the entity represented by the row in a non-English language, possibly Swedish or Finnish. |
nimi | string | Another non-English name for the entity represented by the row, possibly in Finnish. |
vuosi | long | An integer, possibly representing the year associated with the row. |
No sample for this dataset
Additional Information
Last updated | November 11, 2024 |
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Created | November 11, 2024 |
License | No License Provided |
Geographic coverage | |
Geographic granularity | |
Temporal coverage from | |
Temporal coverage to | |
Temporal coverage to | |
Country | fi |
Database | fi_tilastokeskus |
Extract date | 2024-11-11 |
Id | b2e744fd-a4c0-4f48-850d-78193d19ef30 |
Package id | 7fb3d481-3118-40ce-a91f-391ff6c625dd |
Position | 1 |
Revision id | 74ec1ac6-7f15-45fd-acfc-816733ebe03f |
State | active |
Table | tilastointialueet_avi4500k_2022__table__history |