Hello developers!
How data is importing?
Importing bulk data using loader: using insert operation

How should I build logic in the backend?
Before inserting the record I need to check whether it already exists or not. If yes then I need to update the new data into that existing record and need to skip the insert operation in this case. If it is a new record then this should generally insert the record.

Please help me in doing this.

Thanks
Sandeep.

Hi All,
            I have one date field Responded_date__c. so whenever this field contain value then email alert should send to user.
i am not getting, how to set rule criteria. can anyone suggest how to check whether responded date contain value or not?

Thanks