On Thu, Mar 18, 2010 at 2:50 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
Jeff Davis <pgsql@j-davis.com> writes: > There are all kinds of challenges there, but it might be worth thinking > about. Visibility information is highly compressible, and requires > constant maintenance (updates, deletes, freezing, etc.). It also might > make it possible to move to 64-bit xids, if we wanted to.
If you want it to be cheaply updatable (or even cheaply readable), compression is not what you're going to do.
