[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Gnumed-devel] Comments on 0.2
From: |
Karsten Hilbert |
Subject: |
Re: [Gnumed-devel] Comments on 0.2 |
Date: |
Fri, 23 Jun 2006 16:15:31 +0200 |
User-agent: |
Mutt/1.5.11+cvs20060403 |
On Fri, Jun 23, 2006 at 12:21:49PM +0800, Syan Tan wrote:
> hashing also begs the question of what do you hash?
Which is IMO one of the two important reasons a hash won't
work well. The other one is performance.
> for different data types, and different for different versions,
Well, the hash would have to be over a concatenation of all
columns casted to text.
> client hashed on a ,b , y and his hashed on a , b, x because it 's a new
> version made at a different time, in a different place etc...
Well, because of that the hash generation would have to take
place in the backend by means of a trigger updating a hash
column which would then be matched against just like XMIN.
> sequence numbers are pretty simple in comparison.
Yes, such as XMIN.
Karsten
--
GPG key ID E4071346 @ wwwkeys.pgp.net
E167 67FD A291 2BEA 73BD 4537 78B9 A9F9 E407 1346
- Re: [Gnumed-devel] Comments on 0.2, Syan Tan, 2006/06/20
- Re: [Gnumed-devel] Comments on 0.2, Syan Tan, 2006/06/20
- Re: [Gnumed-devel] Comments on 0.2, kittylitter, 2006/06/21
- Re: [Gnumed-devel] Comments on 0.2, Syan Tan, 2006/06/21
- Re: [Gnumed-devel] Comments on 0.2, Tim Churches, 2006/06/22
- Re: [Gnumed-devel] Comments on 0.2, Syan Tan, 2006/06/23
- Re: [Gnumed-devel] Comments on 0.2,
Karsten Hilbert <=
- Re: [Gnumed-devel] Comments on 0.2, Syan Tan, 2006/06/24
- Re: [Gnumed-devel] Comments on 0.2, Tim Churches, 2006/06/24