Creating new tables and import third party data to populate those tables?

I am new to PIWIK.
I would like to create some new table in piwik and transfer data using PIWIK api’s and populate these newly created tables.
By using both the data from newly created table and piwik data itself I want create some new statistics which can be displayed on dashboard.

  • Can we do this in PIWIK?
  • Can we import the data which PIWIK do not understand(except custom variables)?