>Hello all,
>
>To me it looks like a no brainer. When creating a primary key for a table I use a guid.
>
>I'm wondering about something. Why would you use anything else?
>
>Regards

Because it doesn't solve all problems too. And it's laaarge overhead. A table with 10 relationships gathers a lot of space. it's what 176 bytes + index if you store it as byte, or 418bytes if stored as full char expression (352byte unformated)
It's just about the usage - do you need to merge data over different systems and so on.