Which of the following statements is true of a database? a. it is a collection of unstructured data. b. it is accessed primarily for use by an organization’s database administrator and data administrator. c. it provides an essential foundation for an organization’s knowledge management and artificial intelligence systems. d. it companies analyze information to open new market opportunities.

Consider a list of full names formatted “firstname lastname”, like ["jules verne", "alexandre dumas", "maurice druon"]. write a list comprehension that produces a list with the full names in the format “lastname, firstname”. the resulting list should look like ['verne, jules', 'dumas, alexandre', 'druon, maurice']. the simplest solution may involve a nested comprehension: [ …. for … in [ … for … in … ]].