text: CREATE TABLE employee (
  	employee_id uuid PRIMARY KEY NOT NULL DEFAULT uuid_generate_v4(),
  	name VARCHAR(255) NOT NULL,
  	job_role uuid references job_role(_id) ON UPDATE CASCADE ON DELETE CASCADE,
  	salary NUMERIC(9,2),
  	date_of_birth DATE NOT NULL,
  	employee_registration INTEGER NOT NULL
  )
  CREATE TABLE job_role (
  	_id uuid PRIMARY KEY NOT NULL DEFAULT uuid_generate_v4(),
  	name VARCHAR(255) NOT NULL UNIQUE,
  	min_wage NUMERIC(9,2) NOT NULL,
  	max_wage NUMERIC(9,2) NOT NULL,
  	min_w_exp VARCHAR(255) NOT NULL
  )