Your question is a bit generic, as there are various ways to implement this, and the best method usually depends on specific requirements.
One popular method is maintaining the initial data in an Excel spreadsheet and importing it using Miscellaneous/Load Excel Table.
Have a look at stage 10 of our Step-by-step tutorial which demonstrates using this template. See http://www.tersus.com/#Id=2654.
Regarding any errors you encounter, you're of-course welcome to post more details, such as the specific error messages, screenshots and/or a project demonstrating the errors.
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