Simplest way to remove duplicate records from stored data?

Hi -
I've read this faq
http://www.chronoengine.com/faqs/60-cfv4/cfv4-working-with-the-database/2674-how-can-i-edit-a-record-from-a-database-table.html

Are there any updates to this info of the simplest way for us (admins) to remove duplicate records from the stored data.
Do you recommend any newer Joomla extensions for this or PHPAdmin?
(The problem is that some of our users are using the form twice - which is another question - is there any way to prevent this?)

Will removing records from the table using PHPAdmin negatively affect the table and/form? (I'm wondering, for ex, if the total record count is stored somewhere and removing some records will mess this up.)

Thank you,

Hi Jackie,

You can use Connectivity for listing the data and have a delete link in each record, that would make your task easy, or you can do it in PHPMyadmin, modifying the data there should have no side effects on the table, unless you do something wrong.

Regards,
Max