Duplicate Chart
Duplicate Charts have been designed to show when a set of fields in a database are duplicated.
Duplicate Charts are a special form of Daisy Chart where the following conditions have been applied :-

Note that once a Duplicate Chart has been drawn, various commands in the View menu, such as Selected Records can be used to extract the duplicate records.
To see how a full size Duplicate Chart looks and works open one of the examples, such as 'Duplicate Names'.
Other chart types possible with Daisy are :-