def load_db(self):
        """Load the taxonomy into a sqlite3 database.

        This will set ``self.db`` to a sqlite3 database which contains all of
        the taxonomic information in the reference package.
        """

        db = taxdb.Taxdb()
        db.create_tables()
        reader = csv.DictReader(self.open_resource('taxonomy', 'rU'))
        db.insert_from_taxtable(lambda: reader._fieldnames, reader)

        curs = db.cursor()
        reader = csv.DictReader(self.open_resource('seq_info', 'rU'))
        curs.executemany("INSERT INTO sequences VALUES (?, ?)",
                         ((row['seqname'], row['tax_id']) for row in reader))

        db.commit()
        self.db = db
Load the taxonomy into a sqlite3 database.

        This will set ``self.db`` to a sqlite3 database which contains all of
        the taxonomic information in the reference package.