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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Enforced Constraints (sic) ??
It's interesting that SSNs are not recycled. My mother works for the SSA and says they are after the person is deceased for a certain period of time (I forget the specifics). Also, a lot of people get nervous when you use their SSN for an identifier. I've noticed that most State Driver's Licenses do not use the SSN at the license number anymore because people were getting their identities stolen. The same thing goes for having it printed permanently on your checks.
Let's calculate quickly on this one:
250,000,000 million in the U.S. (Legal)
999,999,999 possible numbers (xxx-xx-xxxx)
--Michael
-----Original Message-----
[mailto:Georgette.Cornio_at_cfsc.army.mil]
Sent: Tuesday, June 12, 2001 2:18 PM
To: Multiple recipients of list ORACLE-L
There is also a problem with SSNs, if you deal with Foreign nationals. We had that problem with a US Army program in Europe and Korea. We had to make up Unique numbers to fit the program.
Georgette
-----Original Message-----
Sent: Tuesday, June 12, 2001 12:41
To: Multiple recipients of list ORACLE-L
SSN's are not recycled.
>From the SSA OIG's testimony on SSN use and misuse before congress -
"The SSN is a unique identifier"
http://www.ssa.gov/oig/Testimony05222001.htm
SSN is a perfectly good PK for personnel systems. If you find duplicates
your employer certainly needs to know about it.
I once had a personnel database with 25 years of personnel data (about
1,200,000 individuals). When we loaded it into Oracle with the SSN as PK,
there was one duplicate SSN. Of course, that employer was very
conscientious about requiring a valid SSN.
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author:
INET: tday6_at_csc.com
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