sorry which is the best

[slackman@xxxxxxxxxxx]

Sorry i have wrong...
Now I have 3 database A,B,C is working in Interbase v 5.6,
but Interbas v 5.6 is no longger can hold what the client wants,
I will conver it in Postgresql, I need your advice which is the
bertter result: 

(1):
unika
  |
  |------ A (schema)
  |------------ B (schema)
  |------------------- C (schema) 

(2) create database A, create database B, create database C 

thank you all