Permanent ID concept in HERE Data

Entities with Permanent IDs

Generally, the following feature do have permanent IDs in the HERE Map products:

• Lane
• Face
• Point Features
• Administrative Areas (for , Built-up Areas, Districts, and Administrative Areas)
• Complex Features (this includes Complex Administrative Area Features as well as Complex Intersections and Complex Roads)

Permanent IDs are globally unique within a specific Object, e.g., a Link ID occurs once globally. However the same Permanent ID can be used among different Object types (e.g., Node, Link, condition, etc.). Note: When a map is upgraded to Intermediate or HERE map, or when a country undergoes administrative restructuring, there may be a change in Permanent IDs.

The following are examples of permanent IDs in the RDF:

• Address Point ID
• Admin Place ID
• Association ID
• Building ID
• Carto ID
• Complex Feature ID
• Condition ID
• Country ID (which is one of the Admin Place IDs)
• Face ID
• Feature Point ID
• Lane ID
• Lane Nav Strand ID
• Link ID
• Name ID (with some exceptions)
• Nav Strand ID
• Node ID
• POI ID

• Road Link ID
• Sign ID
• Zone ID

Numeric Range of Permanent IDs

Map object IDs (PVIDs) in the extracts use 32-bit integer values to fit in a N(10) scheme. Note: Exception to N(10) scheme can exist. For example, Lane ID is N(12) in length.
The entire range is divided as follows:



The range dedicated to permanent IDs are used for any entity.
The range dedicated to non permanent IDs are used in rare situations where an update is made in a copy of the database instead of in the live database itself and this update results in a new ID. This new ID in the database copy would be in the non-permanent range. The update would also be applied into the live database and this update would receive a permanent ID available in the next scheduled release. A cross-reference is not provided between non-permanent IDs and the eventual permanent ID from the live database.

Rules for Permanent IDs

Creation of new permanent IDs follow some rules. These are contained in the table below: