text: -- Drops tables generated by external data so they can be rebuilt
  
  drop table if exists themes;
  drop table if exists colors;
  drop table if exists part_categories;
  drop table if exists parts;
  drop table if exists part_relationships;
  drop table if exists inventories;
  drop table if exists sets;
  drop table if exists inventory_parts;
  drop table if exists inventory_sets;
  drop view if exists set_parts;
  drop view if exists part_info;
  drop view if exists part_color_info;
  drop view if exists part_nums;
  drop view if exists canonical_parts;
  
  