What's to figure out?

# Make a connection to the database;
# While not killed by a signal
#  Check to see if there are any new records, and do 
#    something with the new records;
#  Sleep for some period;
# Close the connection to the database.
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Update: Well, my comments were intended for some definition of new. I was leaving the details of the solution to the Original Poster, as the problem definition was itself somewhat vague. If that wasn't useful, I'll try to reply to open-ended nodes like this one less often.