SQL & PL/SQL

Hi,

I've two doubts.

Question1:

Why Oracle is allowing me to create a synonym even base object does not exist in database.

For example in below example user ABC and object def doesnt exist in my database. Why I didnt get any error while creating a synonym.

Connected to Oracle Database 11g Express Edition Release 11.2.0.2.0 
Connected as hr


SQL> CREATE SYNONYM test_syn FOR ABC.def;

Synonym created

SQL> 

Question2:

In PL/SQL after closing the cursor if we use any cursor attribute it will throw exception like invalid cursor. Why it is not happening in case of implicit cursor.

Or

Does Oracle close implicit cursor(SQL) ?

declare

begin

  UPDATE emp
  SET ename = 'SURI';

 COMMIT;

 dbms_output.put_line(SQL%rowcount);

end;

Many thanks for all your help.

Cheers,
Suri