CREATE TABLE IF NOT EXISTS products (
  id                SERIAL PRIMARY KEY,
  name              VARCHAR(250) NOT NULL,
  price             INTEGER      NOT NULL
);

CREATE TABLE users (
  id                SERIAL PRIMARY KEY,
  first_name        VARCHAR(250) NOT NULL,
  last_name         VARCHAR(250) NOT NULL,
  user_name         VARCHAR(250) NOT NULL,
  password          VARCHAR(250) NOT NULL
)