| caching_handle | - Cache for database handles |
| faux_dbh | |
| iterator | iterator for Bio::DB::GFF::Adaptor::dbi |
| mysql | - Database adaptor for a specific mysql schema |
| mysqlace | - Unholy union between mysql GFF database and acedb database |
| mysqlopt | - Deprecated database adaptor |
| oracle | - Database adaptor for a specific oracle schema |
| oracleace | - Unholy union between oracle GFF database and acedb database |