On 8/25/2015 1:42 PM, Gavin Flower wrote:
Account numbers are externally generated, and may potentially change. Management might suddenly decide that they want to start using the year the account started as the first 4 digits, or that the branch code should be reflected in it, or something else. The database should be protected from these arbitrary changes. Hence the account_no is not a good candidate for a primary key.
such practices would raise total havoc on a traditional paper ledger accounting system as well as things like pending AR/AP where external companies will be referencing your account numbers.
-- john r pierce, recycling bits in santa cruz -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
