Question from SQL Certified Expert

Question

Hi
A have a problem with question from Oracle.Lead2Pass test, people wrote that test is valid. But I don't understand answer...
There is print screen - [http://www.fotoszok.pl/show.php/1342156_sql-test.jpg.html] -
I execute this on oracle 10g and:
1) The problem is space instead of common
(order_id jtem_id)
(order_id item_id)
2) If I correct this (replace space to common )- the execution still returns the errors and any index, table doesn't exist.
3) If I correct the name of columns
(order_id item_id)
(order_id item_id) everything is OK.
Can you explain me this? Is there any mistake in the question?
Thanks!

Answer 1

Hmm... Would you help me find my mistake?
In my case it doesn't work ...
When I have executed this:
create table order_item
order_id number(3),
item_id number(2),
gty number(4),
constraint ORD_ITM_ID_PK primary key (order_id,jtem_id)
using index (create index ORD_ITM_IDX on order_item(order_id,item_id))
SQL Developer has gaved me this error
Error starting at line 630 in command:
create table order_item
order_id number(3),
item_id number(2),
gty number(4),
constraint ORD_ITM_ID_PK primary key (order_id,jtem_id)
using index (create index ORD_ITM_IDX on order_item(order_id,item_id))
Error at Command Line:635 Column:50
Error report:
SQL Error: ORA-00904: "JTEM_ID": niepoprawny identyfikator
00904. 00000 - "%s: invalid identifier"
*Cause:   
*Action:
I checked:
1) select * from order_item;
00942. 00000 - "table or view does not exist"
*Cause:   
*Action:
Error at Line: 640 Column: 15
2)select * from user_indexes where lower(table_name)='order_item';
no rows selected
3) drop table order_item;
drop index order_item.ord_tim_idx;
Error starting at line 641 in command:
drop table order_item
Error report:
00942. 00000 - "table or view does not exist"
*Cause:   
*Action:
Error starting at line 642 in command:
drop index order_item.ord_tim_idx
Error report:
01418. 00000 - "specified index does not exist"
*Cause:   
*Action: