I have an integer field that an application increments it each time it adds
a record. But when I run the intances of that application at the same time ,
I get an error because all the instances reading the same last value and
trying to insert the same incremented value to this unique field.

What is the general methode that is to be followed for this problem?
Is it possible to create an autoincrement field as in access databases?
What if I try to make a field (already have unique recodrs in it)
autoincrement?

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