model MemberExam {
  id          String @id @default(dbgenerated("uuidv7()")) @db.Uuid
  targetGrade String @db.VarChar

  memberId String @db.Uuid
  member   Member @relation(fields: [memberId], references: [id])

  examId String @db.Uuid
  exam   Exam   @relation(fields: [examId], references: [id])

  passed  Boolean?
  comment String?  @db.VarChar
}