I had a general question regarding UV maps and textures.
What happens if the objects in my scene are too many to fit in the 0-1 space?
I'm not sure if there needs to be one UV map PER OBJECT( eg, one map for a chair, another map for a table etc) or one UV map for ALL the objects in a scene?

Also, say a bunch of objects need to use the same texture -- for example a bunch of pipes around the house that use the same dirty metal texture -- should they all be in the same UV map?

I'm just having trouble getting the relationship between a UV map and a texture I guess.