"Historically, the most common way of defining primary keys in PostgreSQL was with the serial type, but now the official documentation advises against them in favor of identity columns."
"Using the serial type creates a sequence with a maximum value of 2147483647, while its alternative provides sequences with maximum values over nine quintillions, catering to larger data needs."
"Working with sequences is critical; the function nextval() returns the next value and increments the current value, automatically configured for serial columns."
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