On Apr 19, 2006, at 2:26 PM, Arnau wrote:
I have several databases that I have to synchronize their schemas. I have been testing several programs like EMS PostgreSQL Comparer and Navicat PostgreSQL but none of them does all I need. Any advise about what is the best way to sync the schemas?
I think the best way is to do proper version control on files. After initial version 1, create version 2 as a series of create table, alter table, etc, statements to convert version 1 to version 2 and so on. Changing databases independently with your favorite admin tool and then trying to sync them up based on schema differences is difficult. For example, I don't think there is a way for a comparison program to know the difference between renaming a column and dropping a column with the addition a new one of the same type. The semantics of these two operations are very different.
John DeSoi, Ph.D. http://pgedit.com/ Power Tools for PostgreSQL
