columns:id|TEXT	height|NUMERIC	width|NUMERIC	thickness|NUMERIC	symbolname_left|TEXT	symbolname_right|TEXT	drillingpattern_side|TEXT	drillingpattern_back|TEXT	direction|TEXT	set_amount|NUMERIC	back_recess_min|NUMERIC	minimum_side_thickness|NUMERIC	opposite_id|TEXT	back_cutout_x|NUMERIC	back_cutout_y|NUMERIC	minimum_distance_wall_bracket|NUMERIC	visible_bracket|NUMERIC	hook_offset_y|NUMERIC	cap_count|NUMERIC	set_cap_symbol|TEXT
indexes:id|UNIQUE	opposite_id																		
