Thank you for the feedback.

>>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.