例题 例如:
   PersonnelRecord ::= SET
      {
      name   Name,
      title  IA5String
      number   INTEGER,
      dateOfHire   Date, (雇用日期)
      nameOfSpouse  Name, (配偶姓名)
      children  SEQUENCE OF ChildInformation
      }
   ChildInformation ::=SET
      {
     name   Name,
     dateOfBirth Date
     }
   Name ::=SEQUENCE
     {
     givenName  IA5String,
     initial  IA5String,
     familyName  IA5String
     }
   Date ::=IA5String