input: from typing import List
  
  def store_form_data(form_elements: List[str]) -> str:
      """Processes the form data by extracting and storing it in a database.
      The function should return a confirmation message of successful submission.
      >>> store_form_data(['Name', 'Email', 'Phone'])
      'Form data successfully submitted and stored in database.'
      """
      return 'Form data successfully submitted and stored in database.'
output:     return 'Form data successfully submitted and stored in database.'