I have 3 servers having 3 diff. databases. on all 3 databases table structures,users ,disk spaces etc. etc are same. in all 3 databases data is different means series of each entry in database are having unique unit no. in it like " uc1 for unit 1 and uc2 for unit 2 and uc3 for unit3. what i want to is relicate data of all these 3 units into one single database.