[TYPO3-mvc] best way to query other database readonly from extbase extension

[Gerhard Mehsel]

Hello,

I have a non-typo3 database with a lot of tables and fields in it. I 
have to create an extbase extension that can read that external database 
to process the data, primarily to display summaries depending on filters 
and so on.

Manipulating the data is not necessary because the external database 
will be overwritten by fresh MySQL dumps every day.

Is it possible to somehow map the data into an extbase extension without 
recreating all the external stuff as extbase objects/tables and/or 
importing all the external tables into the TYPO3 database?

Best regards,
Gerd