SQL & PL/SQL

Team,

How data are stored when creating Primary key on a table? I believe its Physical Order.

I have created a table as below.

CREATE TABLE supplier

(

  supplier_id numeric(10) not null,

  supplier_name varchar2(50) not null,

  contact_name varchar2(50),

  CONSTRAINT supplier_pk PRIMARY KEY (supplier_id)

);

insert into supplier values (1,'abcd','efgh');

insert into supplier values (2,'abcd','efgh');

insert into supplier values (3,'abcd','efgh');

commit;

Retrieving rows,

select rowid, a.* from supplier a order by supplier_id

Deleting supplier_id =2,

delete from supplier where supplier_id =2

If it is physical sort order, row_id of supplier_id (3) should more to row_id of supplier_id (2), but it didnt happen.

Can anyone explain how to data are stored in blocks?

Regards,

Praveen