Create a referential integrity constraint on OwnerID in PET. Assume that deletions should not cascade. The PET_OWNER and PET tables already exist, so create the constraint only.PET_OWNER ( OwnerID, OwnerLastName, OwnerFirstName, OwnerPhone, OwnerEmail)
PET (PetID, PetName, PetType, PetBreed, PetDOB, OwnerID)