I choose to install it in its own database, just to keep it separate from OFFL. I do backups of my OFFL database regularly and in case Phorum became corrupted or was found to have security issues, I saw no reason to join them. I simply value my OFFL database much more...
Anyway, just my two cents.
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Can Phorum use the offl database of does it require it's own DB.
Phorum can do either.
I choose to install it in its own database, just to keep it separate from OFFL. I do backups of my OFFL database regularly and in case Phorum became corrupted or was found to have security issues, I saw no reason to join them. I simply value my OFFL database much more...
Anyway, just my two cents.