Avoid Exception

Question

Hi gurus,
Well, I had three questions ... Please answer me ..
1) I have defined a cursor which is going to process 10,000 records of a table .. Say, while processing, may be 1,000 record, an unknown exception may get raised .. that too which I havent trapped in the exception section .. Normally whenever exception is raised, it normally goes to the exception section .. Now my problem is, I dont want any exception to be raised (whether its trapped in exception section or not) ... But still, it has to process remaining 9,000 records .. How can I achieve this ??
2) I have a table called test .. in which I have fields like empno,ename, deptno .. Now I have created a index on the field empno .. When I say
"Select empno from emp"
My explain plan shows full table scan instead of index scan .. Can I know the reason why ? and what I have to do, to make it work on index scan rather than full table scan ????
3) This is regarding the design of tables .. .. My scenario is something like this .. One employee can work in more than one department .. I will have two tables .. emp and dept .. now I have to create or design the tables in such a way, that, it should satisfy the above condition (one employee can be in more than one department) .. I have to create even the constraints like primary key and foreign key .. If I mention empno and deptno of emp table as primary key .. I may have duplicate records like this
Empno . Ename Deptno
====================
1 A 10
1 B 10
which is considered to be a bad design .. Can you people suggest me a good design of my tables ..
Regards
Seshu

Answer 1

Hi,
1) If you give us your code, it can help to understand what your code.
2) Select empno from emp...make it work on index scan rather than full table scan
=> it's certainly more efficiant to make a FTS than index usage, you don't have any restriction, so you get all the table.
3) empno and deptno of emp table as primary key
=> why not, but in this case, you cannot have the output which you gave. I would prefer an other table than emp table to join emp tbl to dept tbl.
Nicolas.