Just a word of caution: do not directly store off the returned reference from DBI results from other methods without first checking the docs to see if it's safe to do so.

Most likely to be hit in "normal" use would be fetchrow_arrayref which reuses the same underlying array for each call (so you'd need to dereference and make a copy; e.g. $store->{'somewhere'} = [ @{ $returned_by_fetchrow_arrayref } ];).