$db = Bio::DB::GFF->new(
                     -dsn => 'dbi:mysql:driver=mysql;host=localhost;dbname=pddb_gene_models_3_26',
                     -user => 'webuser',
                     -pass => 'ptest',
                     -aggregator =>  [
                                       'processed_transcript',
                                       'meta{chunk/meta}'
                                     ];
                    );


$attributes = { 'EntrezGene' => 7097 };
@extended_types =  [
          'CDS:Ensembl',
          'UTR:Ensembl'
        ];

@feature_set = $db->features(   -types => \@extended_types,
                                -attributes => $attributes );


Database contains:

fattribute_to_feature table with
+---------+---------------+------------------+
| fid     | fattribute_id | fattribute_value |
+---------+---------------+------------------+
| 1325112 |             3 | 7097             |
| 1325113 |             3 | 7097             |
| 1325114 |             3 | 7097             |
| 1344783 |             3 | 7097             |
| 1344784 |             3 | 7097             |
| 2329797 |             3 | 7097             |
| 2596692 |             3 | 7097             |
| 2802692 |             3 | 7097             |
+---------+---------------+------------------+

fdata table with:
+---------+------+-----------+-----------+--------------+---------+--------+---------+--------+--------+---------------+--------------+---------+---------------+------------------+
| fid     | fref | fstart    | fstop     | fbin         | ftypeid | fscore | fstrand | fphase | gid    | ftarget_start | ftarget_stop | fid     | fattribute_id | fattribute_value |
+---------+------+-----------+-----------+--------------+---------+--------+---------+--------+--------+---------------+--------------+---------+---------------+------------------+
| 2802692 | chr4 | 154622652 | 154626851 | 10000.015462 |       3 |   NULL | +       | NULL   | 422357 |          NULL |         NULL | 2802692 |             3 | 7097             |
+---------+------+-----------+-----------+--------------+---------+--------+---------+--------+--------+---------------+--------------+---------+---------------+------------------+

where ftype_id of 6 is CDS:Ensembl