The development_type_group_definitions table

This table defines the set of development_types in each development type group. Each row defines one ``belongs to'' relationship (a particular development type that ``belongs to'' a particular development type group).

Column Name	Data Type	Description
development_type_id	integer	Index into the development_types table
group_id	integer	Index into the development_type_groups table

• development_type_id must be a valid index into the development_types table
• group_id must be a valid index into the development_type_groups table
• The combination of development_type_id and group_id must be unique