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"When do you use a spreadsheet, and when do you need a database? Both application types are used for managing data. How do you decide which would be more practical?"

""Graph TV," the latest project by data viz virtuoso Kevin Wu, lets you visualize IMDb's massive database of user ratings. Type in the name of a show and the site gamely spits out a graph of every episode, helpfully color coding seasons and drawing a linear regression line for each. No longer will your TV arguments be founded solely on vague recollections and long-held grudges. This is cold hard data."