Forum:Who Is Zatanna?

I'm just wondering here but, how old and who is Zatanna? I'm not quite sure about here and i only found a little information about her and this is the link where I found Zatanna's profile : http://youngjustice.wikia.com/wiki/Zatanna

And also anybody know her relationship with robin? I want to start liking her as a charcter so I would like to know more about her to.

Thanks!