autodesk forge – Sqlite properties DB – any documentation about the data types and unit symbols in the _objects_attr table?

Good Day,

is there any documentation about the data types and unit symbols in the sqlite properties database (_objects_attr table)?

Having looked at different files, the data types seem to map as follows:

• 1 – boolean
• 2 – integer
• 3 – float
• 11 – link/reference
• 20 – string
• 21 – element type
• 22 – date

The units (data_type_context) seem to vary per source file format.
Only floats have unit definitions.

For Revit, units are defined in a Revit specific way:

For other formats, SI and imperial unit symbols are used (mm, m, m^2, m^3, ft, ft^2, ft^3, radian, deg, …)

Is this correct? Any documentation would help.

Many thanks

Wolfgang