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On 11/27/06 11:47, Scott Marlowe wrote:
> On Thu, 2006-11-23 at 10:23, Ron Johnson wrote:
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>> On 11/22/06 20:23, carter ck wrote:
>>> Hi all,
>>>
>>> I am wonderring if it is a good practice to use SERIAL index as primary
>>> key, as it is only available up to 9999999?
>>>
>>> Currently i am dealing with storing LDAP users into Postgres and i am
>>> looking for a better way to make use of the DN as primary key instead of
>>> SERIAL index.
>>>
>>> Any advice or suggestion is appreciated.
>> I'm one of those who thinks that a (possibly multisegment) natural
>> key *does* exist, and that if you think it doesn't, your design is
>> wrong.
>
> Spend some time in the travel industry... The tax category ZO means
> Passenger Service Chareg in Denmark. Or Greenland, or Faroe Islands.
> And can be entered more than once. And the travel agent has to look at
> the context of the travel itinerary to know which one(s) it is.
>
> Sadly, the real world has many data problems created by idiots in suits
> 30 years ago that aren't going to go away any time soon.
Yes, that's the point. They are legacy designs, and that portion of
the design is wrong.
- --
Ron Johnson, Jr.
Jefferson LA USA
Is "common sense" really valid?
For example, it is "common sense" to white-power racists that
whites are superior to blacks, and that those with brown skins
are mud people.
However, that "common sense" is obviously wrong.
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