List Item

[saritha]

How do you check that the value in the list item is selected once on a given date.
I have a list item values like "10000-2430-22111",
10000-2430-27131
10000-2430-27132
10000-2430-27133
10000-2430-27134
40001-6450-27112-54
53000-3420-24806
72013-2430-5230


for these values a user can select only once the 10,000 value, only once 40001 value, only once the 72000 value etc on any given day....So how do I check this condition.

How do you check that the value in the list item is selected once on a given date.

Can anyone please answer my doubt.

Thanks
saritha.

[kmesser]

Write a function which queries the table where that value is stored, or create a unique index on the concatenated "10000" and date.