The tabs show the university database. A key icon marks each primary key column.

1. Which column is the primary key of department?

2. Create a table badges with a whole-number id that identifies each badge, and a required text name.

3. The team sends three badges. Add them with one INSERT:

   id	name
   1	First Query
   2	Night Owl
   2	Table Maker

   Read the error. Which key value does the DETAIL line say exists already?

4. Table Maker is badge 3. Add the three badges.