feature_id character_data

An identifier string containing the number of the part

feature_name character_data

Descriptive name of the part

is_supported yes_or_no

YES if the part is fully supported by the current version of PostgreSQL, NO if not

is_verified_by character_data

Always null, since the PostgreSQL development group does not perform formal testing of feature conformance

comments character_data

Possibly a comment about the supported status of the part