Product Version Information file (JSON)
The OS Open Linked Identifier data package also contains Product Version Information files. These are contained inside each relationship zip package as JavaScript Object Notation (JSON) format.
JSON is an open-standard file and data interchange format that uses human-readable text to store and transmit data objects consisting of attribute-value pairs and array data types.
The general structure of the metadata JSON is detailed below:
filename
The name of the Linked_ID CSV file
Type: text
Multiplicity: [1]
productPublicationDate
The product publication date.
Type: date
Format: YYYY/MM
Multiplicity: [1]
productPublicationName
The Linked_ID Epoch Number that the JSON file refers to. (In the format “Epoch {number}”.)
Type: text
Multiplicity: [1]
Identifier1Source
Type: Object
Multiplicity: [1]
Identifier1Source.productName
The product name of the source product for identifier 1.
Type: text
Multiplicity: [1]
Identifier1Source.productPublicationDate
The publication date of the source product for identifier 1.
Type: date
Format: YYYY/MM
Multiplicity: [1]
Identifier1Source.productPublicationName
The epoch number of the source product for identifier 1. If provided, in the format “Epoch {number}”.
Type: text
Multiplicity: [0..1]
Notes: Not supplied if null value.
Identifier1Source.featureType
The feature type of the source for identifier 1. Can be one of:
BLPU
Road
RoadLink
Street
TopographicArea
Type: text
Multiplicity: [1]
Identifier1Source.identifierType
The identifier type of the source for identifier 1. Can be one of:
GUID
TOID
UPRN
USRN
Type: text
Multiplicity: [1]
Identifier2Source
Type: Object
Multiplicity: [1]
Identifier2Source.productName
The product name of the source product for identifier 2.
Type: text
Multiplicity: [1]
Identifier2Source.productPublicationDate
The publication date of the source product for identifier 2.
Type: date
Format: YYYY/MM
Multiplicity: [1]
Identifier2Source.productPublicationName
The epoch number of the source product for identifier 2. If provided, in the format “Epoch {number}”.
Type: text
Multiplicity: [0..1]
Notes: Not supplied if null value.
Identifier2Source.featureType
The feature type of the source for identifier 2. Can be one of:
BLPU
Road
RoadLink
Street
TopographicArea
Type: text
Multiplicity: [1]
Identifier2Source.identifierType
The identifier type of the source for identifier 2. Can be one of:
GUID
TOID
UPRN
USRN
Type: text
Multiplicity: [1]
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