I'm working in a project which is using postgres (great database!, I love it)
We're in a stage where I need to implement a mechanism to prevent the data modification. I'm thinking on 'Digital Signatures' (maybe RSA) in each row. If there's a modification, the signature doesn't verify. However before start I need your help to know: Is there in postgres something functionality like this? Does any know if there's something similar another database system? thanks in advance! Luis Alberto Pérez Paz
