Adding Tables and/or fields to Nopcommerce database

If I write an application that requires adding a filed to an existing table or adding a new table to the database will that get overwritten in subsequent upgrades.

I am currently running v2.8  I understand v 3.0 beta is coming out.  If I modify the 2.8 database (new fields and tables) will that get removed when upgrading to v3.0?

hi ramon,

better to stick to using new tables - they won't get overwritten

Thanks Haydie,

This is clearly the safest way to go.  Somethings will need to be rethought t avoid adding fields to an existing table.
Mapping tables which I see used is the way around this.

You may also use the generic attributes feature
Check  this too

Feel free to adding fields.
In case of release upgrade, nop don't destroy tables, just slter it.
Besides, you alays backup db...
Beware of indexes, they can be deszroyed