I have following SQL code:

```
  CREATE TABLE "MY_SCHEMA"."FLIGHT" 
   (    "ID" NUMBER NOT NULL, 
    "SERVICE_SEQ_FK" NUMBER FOREIGN KEY REFERENCES SERVICE(SERVICE_SEQ)
   );

```

It gives following error:

> 
> SQL Error: ORA-00907: missing right parenthesis
> 
> 
> 

What right parenthesis?