hi i have a table in oracle and a winform on front end (C#2005).
well problem is that i want to check if their is any duplication of rows based on four columns , if their is any duplication it wont let the user to see records or it should't pull up the records.
Note: i am selecting records where "transaction_date=?" the row has four columns that grouped together to make a composite key.
thanks in advance.