def single(self, fk, statistics=None):
obj = ForeignKey()
print(fk)
obj.db_catalog = fk['db_catalog']
obj.pkdb_schema = fk['srcschema']
obj.fkdb_schema = fk['referred_schema']
obj.pktablename = fk['srctable']
obj.fktablename = fk['referred_table']
obj.pk_columns = '|'.join(fk['constrained_columns'])
obj.fk_columns = '|'.join(fk['referred_columns'])
obj.keyname = fk['name']
obj.type = 'EXPLICIT'
obj.score = 1.0
obj.comment = ''
obj.tags = ''
obj.date_added = datetime.datetime.now()
return obj
