I would like to set up a MySql database that will store distance information for a milage lookup program. The user will enter the origin city and the destination city for some predefined trips. Then the query will need to return the milage broken down by state. For example, for an origin city in NJ and a destination city in OH, the program would need to return how many miles were traveled within NJ, PA, and OH.
It would be very inefficient to use one large table with columns for each state in the USA because most of them would be empty. A two table approach would use a primary table to store the origin, destination, and a unique reference key. While the secondary table would hold the reference key as a foreign key and a record for each state name and mileage. If anyone has had a similar design challenge I would appreciate hearing any comments you might have. Thanks -- Michael __________________________________________________ Do You Yahoo!? Yahoo! - Official partner of 2002 FIFA World Cup http://fifaworldcup.yahoo.com --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
