The auto-increment operator is ++ and means “increase by one unit.” If A is an int, for example, the expression ++A is equivalent to ( A = A + 1 ). Auto-increment and auto-decrement operators produce the value of the variable as a result.

Auto Increment is a feature in databases that automatically assigns a unique and increasing value to a column when a new row is inserted. It simplifies data entry, ensures unique identifiers for records, and is commonly used for primary keys.