DB columns are not dropped on package uninstallation
Columns are still exist after package uninstallation.
For example, adsense_id field of the Publishing package.
Updated by Vasily Bezruchkin about 8 years ago
- Status changed from New to Rejected
- % Done changed from 0 to 100
We might still need too keep some information, so it's recommended to keep the fields just. Let's package adds extra fields for accounts - address, website admin can gather tons of information, and I'm not sure it's really a good idea to alter tables and drop created information.
Anyway, if you still need to alter it - you can do that using uninstall sql xml attributes.