Avoiding duplications in tables

Hi All,
I have the following tables.

(1) tablename : versions

versionnumber - string

(2) tablename : applications

applicationnumber - integer
other details

(3) tablename : applicationnumber

versionnumber - string
applicationnumber - integer

(4) tablename : profilemanager

versionnumber - string
profilename - string
applicationnumber - integer
other details

(5) tablename : profiles

versionnumber - string
profilename - string

Primary key :
---------------

(1) versions : versionnumber
(2) applicationmanager : versionnumber, applicationnumber
(3) applications : applicationnumber
(4) profilemanager : veriosnnumber, profilename, applicationnumber
(5) profiles : versionnumber, profilename

Relations :
-----------

(1) versionnumber of 'applicationmanager' referes to versionnumber of

'versions' table.
(2) applicationnumber of 'applicationmanager' referes to
applicationnumber of 'applications' table.
(3) versionnumber and applicationnumber of 'profilemanager' referes
to versionnumber and applicationnumber of
'applicationmanager'.
(4) versionnumber and profilename of 'profilemanager' referes ot
versionnumber and profilename of 'profiles'.
(5) versionnumber of 'profiles' referes to versionnumber of
'versions'.

In the above design I can able to see duplication of data in all the
tables. If I take out a id out of all these tables to make reference, is

that problem will solve. Is that is
a correct approach.

Can any one help me.

regards,
Deepa K