i want to update and revert some records.

my records as below

 Code      ID           Name        Record No.

 101     101-1          mk          -1   && buffered new record
 101     101-1          ms          -2   && buffered new record
 101     101-2          mm          -3   && buffered new record
 101     101-1          mr          501  && buffered old record
 101     101-2          mx          550  && buffered old record

i want to save the records, only have ID="101-1"

i want to revert OR delete records that not have ID="101-1"

warm regards,
mk.