What exactly is GUID? Why and where I should use it?

Question

What exactly is GUID? Why and where I should use it?
I\'ve seen references to GUID in a lot of places, and in wikipedia, but it is not very clear telling you where to

Answer 1

The Wikipedia article on GUIDs is pretty clear on what they are used for - maybe rephrasing your question would help - what do you need a GUID for?