Can I replace string type of ID with Int type (auto increasing!)

it is not possible in the current stable version but it is possible in the current alpha under a prototype flag(as it has datamodel v1.1) See: https://github.com/prisma/prisma/issues/3233#issuecomment-465513624 and https://github.com/prisma/prisma/issues/3403

Thank you for quick reply!!