The change will take time , but Nardelli said it is necessary for the nation 's largest home improvement store chain if it is to grow amid increasing competition .
Change will take time , but is necessary for the nation 's largest home improvement store chain if it is to grow amid increasing competition , chief executive Bob Nardelli said .
a logical collection of information - gathered from many different operational databases/systems, as well as external industry information - in a common location that uses a universal querying tool