What is repository & what is Metadata?

hi,
What is repository and metadata.
Regards,
Mahendra

Repository:-
what is business object repository
what is a bo repository
Metadata :- In common terminology data about the data is called metadata.
http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/b0a668f5-d195-2e10-b3a5-86187085e2a6?QuickLink=index&…
Hope this clarifies.
--SumanT

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