columns => [
id => { type => 'serial', not_null => 1 },
requirement_spec_id => { type => 'integer', not_null => 1 },
+ item_type => { type => 'text', not_null => 1 },
parent_id => { type => 'integer' },
position => { type => 'integer', not_null => 1 },
fb_number => { type => 'text', not_null => 1 },