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for foreign key which data type is covinent ?

Posted By:      Posted Date: September 03, 2010    Points: 0   Category :ASP.Net
for foreign key which data type is covinent ?example:- a fruits shop application.i have 4 text boxes in that can enter 1.mango,2.apple,3.banan,4.pineapple.i want to buy and sale, inventry based on date save in database and retrive.can explain any one for that i think foreign key is required.so i am asking is it possible date time for foreign key ?

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