Any option for Matching for duplicate Records using MDM Iviews

Hi Experts

Any option is there to provide Matching Duplicate of existing Records using MDM Iviews provided in Portal.

Requirement- I need to find Duplicate Records before adding the same in Data Manager. (MDM).

Also, in MDM-Result Set Iview, do we have any option to Export the items displayed.

Please Advice.

Regards

Prashant