input: Write a function to determine if it is possible to create a HTML page that displays a table of contents from data stored in a database. If it is possible, return 'Yes' else return 'No'. If no input is provided, return 'Yes'.
  assert display_table_of_contents(True, True, True)=='Yes'
  assert display_table_of_contents(False, True, True)=='Yes'
  assert display_table_of_contents(True, False, True)=='Yes'
  assert display_table_of_contents(True, True, False)=='Yes'
  assert display_table_of_contents(False, False, False)=='No'
  assert display_table_of_contents()=='Yes'
output: def display_table_of_contents(has_data=True, has_database=True, has_html_support=True):
      if not has_data or not has_database or not has_html_support:
          return 'No'
      return 'Yes'