Facts: - employer: walmart - caption: duke speaks at a walmart shareholders meeting - birth date: 7 december 1949 - name: mike duke - image size: 250 - image: walmart best retailer.jpg ceo mike duke on tips to being the - boards: consumer goods forum - alma mater: georgia tech Based on these bullet points, write a short biography describing the life of mike duke .
A:
michael terry duke -lrb- born december 7 , 1949 -rrb- is an american businessman .he served as the fourth chief executive officer of walmart from 2009 to 2013 .