Is varchar2(9) or even number(9) bad as a ssn?

Hi All,
I just want to question the wisdom of (<INT>) datatypes.
If I do ...
create table table_0123 (
ssn varchar2(9),
... in tons of tons code (or even in a small piece of code
that gets used or modified over and over), won't I be setting
my self up for a Y2K like problem if there is ever more than
999,999,999 people with SSN's? What is that ... 1 billion people?
How many people are in the world?
wouldn't ...
create table table_0123 (
ssn number,
be better?
Thanks

So you're compiling a database that holds details of everybody in the whole world? Spooky. Still you've come to the right place: Oracle started out as a CIA project.
Datatype for SSN: hmmm. I'm not American, so I'm not familiar with your system. On this side of the pond our SSN equivalents (NIN) are of the format AA999999A, which gives us 17,575,982,424 combinations (or thereabouts, I don't know if there are any excluded characters). This is sufficient for a few centuries of UK existence, but not very good for the whole world. But, given an alphanumeric format, VARCHAR2(9) is the only viable definition.
If you have a purely numeric SSN then NUMBER is a goer. Please do not choose VARCHAR2(9) for a purely numeric field - I have a (third party) legacy system here that has that combination for the primary key of the most referenced table, which means having to LPAD everything with zeroes. Nightmare.The choic
As the following test shows, all NUMBER fields take up the same about of space so there are no storage implications for you. The choice is merely a question of the amount of metadata you wish to build into your system.
When you acheive world domination can I be your cackling, hunchbacked sidekick?
Cheers, APC
SQL> create table num_tst (col1 number(9,0), col2 number(38,0), col3 number);
Table created.
SQL> select column_name, data_length, data_precision, data_scale
2 from   user_tab_columns
3 where table_name = 'NUM_TST';
COLUMN_NAME                    DATA_LENGTH DATA_PRECISION DATA_SCALE
COL1                                    22              9          0
COL2                                    22             38          0
COL3                                    22
SQL>

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okie dokie fellas i know this has got to be easy but i hjave been sittin at my comp forever workin on projects that are due and my head isn't all there anymore...could someone please clue me in on how im supposed to write the logic to find the median of an array of integers if the array contains an even number of values...I know I have to average the 2 values on either side but i cant figure it out at all...sorry i know its dumb but thnaks to anyone who helps
package pgm3deClercqMatt;
* @author Owner
* To change the template for this generated type comment go to
* Window>Preferences>Java>Code Generation>Code and Comments
import java.sql.*;
import javax.swing.*;
import java.awt.*;
import java.util.*;
import java.text.*;
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sorry to anyone who thinks what i'm doing is a joke
first of all i'm a student and secondly i'm taking
java in a summer session so things don't get
explained as well as they should. And how is this our problem?
I'm doing the best
i can. The for loop was because the array that I
defined to hold 200 values was being filled by a
database with a supposed unknown number of values but
less than 200 so i waslooping through to get each
value and put it in order and the conditional
statement was supposed to test to see if the incoming
median was an integer and was in the final write-up
put into it's own boolean method returning false if
there was no median and you needed to take the
average of the next lowest and highest values. BThere's always a median. The definition I sent you tells you what it is.
But
thnak you very much to the people that actually help
on here and don't try to bash people who have put
effort into writing their code, however shitty it may
look to them. You can't control what people say about your stuff. Everyone who criticizes your work isn't making a personal attack. They're telling you something that you should be learning from. Your problem is that you can't separate yourself from your work.
No one knows absolutely everything and
people who decide to talk down on others when they
are using this forum as a last resort need to grow
up.Grow up? That's what you need to do. If you think for a moment that you'll never be criticized once you leave that ivory tower you're sadly mistaken. You need to figure out how to separate yourself from your code.
%

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Alignment Quantum: 2
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Brian,
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Write a program that is supposed to read 500 integers from user. Use a break statement to stop the reading if any negative even number is entered. Display that number
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xcoder wrote:
Write a program that is supposed to read 500 integers from user. Use a break statement to stop the reading if any negative even number is entered. Display that number
Can anyone write the pseudocode for this question?
The thing that bothers me is that a negative even number, How do I write the code to stop this one?
Can anyone also write the computation part? I'd do the remaining whole body. Thank you ( Just a rough figure will help a lot ) Thanks
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johnsold wrote:
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I gave a schematic outline of the badi's and exits required to customize SAP QM in a particular way.
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MAPL
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Hi Stephen -
I appreciate the responses from you and Chris very much, because my current customer is right now grappling with the question of whether what we "need" to do is actually too much dangerous over-customization. So this is not a discussion in the usual "theoretical vacuum".
I want to explain why I think the "direct update" rule here MAY not apply in this particular case.
But before I do, I want to make very clear that I was the one who brought this situation to management attention when it turned out that NINE core SAP tables were involved, not just ONE. So whereas I felt more or less comfortable with one update to one table to repoint an inspection lot to a different inspection plan than the one which SAP selects, I didn't feel at all comfortable with direct updates to eight other core tables, particular when these involve what amount to "key field updates" - effectively, "deletes/re-adds".
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1) undoing the choice of inspection plan that SAP has made and recorded in these tables;
2) recording our "custom" choice of inspection plan in these tables.
For this reason, it is difficult to BLINDLY apply the "don't do direct updates" and "don't do something SAP doesn't anticipate you doing" rules. Because on the one hand, it is true that SAP does not specifcally say in the BAdI documentation or exit parameters: "use this exit to change choice of inspection plan" or "use this BAdI to change choice of inspection plan". But on the other hand, we are not using the exits/BAdI's to do anything different than SAP already does when MIGO GR posting triggers inspection lot creation and inspection plan assignment.
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Anyway, I want to close this post by saying that the functional analysts who proposed the customization in the first-place do NOT think that direct updates of nine core SAP tables is overly dangerous, and this is why management has to make a difficult decision between what the functional consultants are saying and what the in-house development lead is saying.
As a consulting developer, my job (fortunately!) is to collect the relevant facts and present a clear picture to the development lead, so that he or she can in turn present a clear picture to management.
It will be interesting to see the eventual outcome of this situation, and I will of course report this outcome back to this thread.
And again, thanks very much for taking the time to respond.
djh

Is varchar2(9) or even number(9) bad as a ssn?

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