2 easy options that I've used to duplicate the table.
Option 1:
> If you have one table made already, you can add ALL 100 of those fields to a report.
> Save that report as a spreadsheet
> Then use the option to create a new table from a spreadsheet, then it will go through and it will ask you the field types for all of the fields.
(With 100 fields that could take some time)
Option 2: (My preference)
> Copy your application
> In the original app, go to the app management settings page
> Select "Move a table into this App"
> find the table in your copied app.
> Transfer
> Then just rebuild any relationships needed.
(shouldn't take more than 5 min, and about 20 clicks)
