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Am doing campus management system..in that for attendance module,for a student per month one column should be used..for the next month next entry has to be made in next row ..and so on...so that the number of entryies will be minimised & it will be easy to retrieve...can any one help me ut from here for this querry please...
You could use text column with 31 positions. One position per day.
Put in a '1' if the student attended, put in a '0' if the student was absent, on the position that matches the day.
If the student attended 1 to 3 september, and was absent on the 4th, you would get:
(disclaimer: I am not really a fan of composed columns, it's not quite as per the data normalization rules).