GLA Assembly Constituency
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With the introduction of the regional government for London (referred to as the Greater London Authority or GLA by OS NGD documentation), the proportional representation voting area for this new administration is the GLA Assembly Constituency.
The earliest date on which you can request a one-off snapshot of a date in the past for data in this feature type is 29 September 2022.
The following sub-sections provide details about the attributes included with this feature type, their data types in the different output formats, and other important metadata about them.
Primary identifier for the feature. The OSID is a Globally Unique Identifier (GUID) and requires no centralised authority to ensure uniqueness. Note that the same OSID can occur in more than one feature type when a single feature is represented multiple times in the OS NGD.
Data Types: String (GPKG), String (CSV)
Nullable: false
Max Length: 36
OS Select+Build Filterable: No
Data Schema Version: 1.0
Topographic identifier (TOID) of the feature, as published in the OS MasterMap suite of products.
Data Types: String (GPKG), String (CSV)
Nullable: true
Max Length: 20
OS Select+Build Filterable: Yes
Data Schema Version: 1.0
Date when the version was last updated.
Data Types: Date (GPKG), Date (CSV)
Nullable: false
OS Select+Build Filterable: No
Data Schema Version: 1.0
The date this version of the feature became the latest version.
Data Types: DateTime (GPKG), DateTime (CSV)
Nullable: false
OS Select+Build Filterable: No
Data Schema Version: 1.0
The date this version of the feature was superseded by an update or ceased to exist.
Data Types: DateTime (GPKG), DateTime (CSV)
Nullable: true
OS Select+Build Filterable: No
Data Schema Version: 1.0
The type of change that generated a new version of the feature.
Data Types: String (GPKG), String (CSV)
Nullable: false
Code List Name: changetypevalue
Max Length: 50
OS Select+Build Filterable: No
Data Schema Version: 1.0
Geometry for the feature.
Data Types: Geometry (GPKG), WKT (CSV)
Nullable: false
OS Select+Build Filterable: No
Data Schema Version: 1.0
Geometry Type: Polygon
The measured area of the geometry in square metres.
Data Types: Float (GPKG), Real (CSV)
Nullable: false
Precision: 18
Scale: 6
OS Select+Build Filterable: No
Data Schema Version: 1.0
The OS NGD theme to which this feature belongs.
Data Types: String (GPKG), String (CSV)
Nullable: false
Code List Name: themevalue
Max Length: 40
OS Select+Build Filterable: No
Data Schema Version: 1.0
A single descriptive value intended for a quick understanding of what the feature represents.
Data Types: String (GPKG), String (CSV)
Nullable: false
Code List Name: glaassemblyconstituencydescriptionvalue
Max Length: 50
OS Select+Build Filterable: Yes
Data Schema Version: 1.0
Name assigned to identify the feature.
Data Types: String (GPKG), String (CSV)
Nullable: false
Max Length: 254
OS Select+Build Filterable: Yes
Data Schema Version: 1.0
The language of name1, provided as a 3-digit ISO 639-2 code ('eng, 'cym', 'gla').
Data Types: String (GPKG), String (CSV)
Nullable: true
Code List Name: languagevalue
Max Length: 3
OS Select+Build Filterable: No
Data Schema Version: 1.0
The alternative language name assigned to identify the feature.
Data Types: String (GPKG), String (CSV)
Nullable: true
Max Length: 254
OS Select+Build Filterable: Yes
Data Schema Version: 1.0
The language of name2, provided as a 3-digit ISO 639-2 code ('eng, 'cym', 'gla').
Data Types: String (GPKG), String (CSV)
Nullable: true
Code List Name: languagevalue
Max Length: 3
OS Select+Build Filterable: No
Data Schema Version: 1.0
Set to the census / Government Statistical Service (GSS) Code for the boundary, for example, E10000014.
Data Types: String (GPKG), String (CSV)
Nullable: false
Max Length: 10
OS Select+Build Filterable: Yes
Data Schema Version: 1.0
A single description value for boundary type.
Data Types: String (GPKG), String (CSV)
Nullable: false
Code List Name: boundarytypevalue
Max Length: 50
OS Select+Build Filterable: Yes
Data Schema Version: 1.0
Identifier for the Parent Boundary
Data Types: String (GPKG), String (CSV)
Nullable: false
Max Length: 36
OS Select+Build Filterable: No
Data Schema Version: 1.0
Further classification indicating the Parent Boundary feature type.
Data Types: String (GPKG), String (CSV)
Nullable: false
Code List Name: parentfeaturetypevalue
Max Length: 50
OS Select+Build Filterable: No
Data Schema Version: 1.0
Further classification indicating the Parent Boundary.
Data Types: String (GPKG), String (CSV)
Nullable: false
Code List Name: parentboundarydescriptionvalue
Max Length: 50
OS Select+Build Filterable: No
Data Schema Version: 1.0
Name assigned to identify the Parent Boundary. If the name is defined in multiple languages, then each name shall be provided with an associated language qualifier. If the proper name is only defined in one language, then no language qualifier will be provided.
Data Types: String (GPKG), String (CSV)
Nullable: false
Max Length: 254
OS Select+Build Filterable: No
Data Schema Version: 1.0
The language type associated with name1 for the Parent Boundary. The valid values are defined in the LanguageValue codelist.
Data Types: String (GPKG), String (CSV)
Nullable: true
Code List Name: languagevalue
Max Length: 3
OS Select+Build Filterable: No
Data Schema Version: 1.0
Name assigned to identify the Parent Boundary. If the name is defined in multiple languages, then each name shall be provided with an associated language qualifier. If the proper name is only defined in one language, then no language qualifier will be provided.
Data Types: String (GPKG), String (CSV)
Nullable: true
Max Length: 254
OS Select+Build Filterable: No
Data Schema Version: 1.0
The language type associated with name2 for the Parent Boundary. The valid values are defined in the LanguageValue codelist.
Data Types: String (GPKG), String (CSV)
Nullable: true
Code List Name: languagevalue
Max Length: 3
OS Select+Build Filterable: No
Data Schema Version: 1.0
The inland area of the feature in hectares.
Data Types: Float (GPKG), Real (CSV)
Nullable: false
Precision: 15
Scale: 6
OS Select+Build Filterable: No
Data Schema Version: 1.0
The non-inland area in hectares.
Data Types: Float (GPKG), Real (CSV)
Nullable: false
Precision: 15
Scale: 6
OS Select+Build Filterable: No
Data Schema Version: 1.0
The total area in hectares.
Data Types: Float (GPKG), Real (CSV)
Nullable: false
Precision: 15
Scale: 6
OS Select+Build Filterable: No
Data Schema Version: 1.0
Loading OS NGD CSV files into databases
Comma-separated values (CSV) file format is universally supported for easy ingestion into all major database products. Before loading OS NGD data contained in CSV files into a database, it is necessary to create relevant tables. Data definition language (DDL) statements for PostgreSQL, SQL Server and Oracle can be accessed in our OS NGD Resources GitHub repository.
For instructions on loading CSV files, see the Getting Started with CSV guide.