Martijn Tonies wrote:

>Hi,
>
>
>
>>>However, it is guaranteed unique until the year 3040.
>>>
>>>
>>Can I ask where you got this snippet of information?
>>
>>Specifically the ideas of "guarantee" and "year 3040".
>>
>>I thought that GUIDs were effectively random numbers, created
>>in such a way that the _chances_ of duplication were extremely
>>small. But still only chance and not a guarantee.
>>
>>
>
>>From what I understood, GUIDs are basically random
>except when you have a network card in your PC. Then,
>they use the MAC address (or something like that) from
>the card, which is unique, and therefor become unique
>IDs, unless your PC reboots in about half a second or so.
>
>
>

And if you don't even have a network card in your PC, then, a) it's not
much of a database server, and b) you won't be needing GUIDs anyway in
most cases, since you obviously won't be using any kind of
synchronization/replication...! :-)

Jonathan Neve.