March 19, 201510 yr I have a database with the folowing fields Start time, End time, Date, and Room. I am triying to creat a field with a validation that will let me know if another record has a room with the same date same strat otime and end time. How do a I do this with validation and choose the calculation option. Thanks
March 19, 201510 yr You cannot validate a Calculation field. However, you can define a Text field and set it to auto-enter a calculated value (replacing existing value) = StartTime & "|" & EndTime & "|" & Date & "|" & Room and validate this field as Unique.
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