text: -- Tested on PostgreSQL 11.
  -- Would be good to make this a mini-tutorial or use Braus's content, etc. and link out.
  
  -- Drop, create, and use a DB called "makefeedback."
  DROP DATABASE IF EXISTS "makefeedback";
  CREATE DATABASE "makefeedback";
  USE "makefeedback";
  
  -- Drop makefeedback.feedback if it already exists.
  -- WARNING: This will delete all your data.
  DROP TABLE IF EXISTS "feedback";
  
  -- Create the table.
  CREATE TABLE "feedback" (
      "id" SERIAL PRIMARY KEY,
      "rating" SMALLINT NOT NULL DEFAULT 0 CHECK (("rating" >= 0) AND ("rating" <= 5)),
      "date" DATE NOT NULL DEFAULT CURRENT_DATE,
      "time" TIME NOT NULL DEFAULT CURRENT_TIME,
      "item" TEXT NOT NULL,
      UNIQUE ("date", "item")
  );
  