MySQL a PostgeSQL
Petr Cech
cech na atrey.karlin.mff.cuni.cz
Čtvrtek Duben 20 17:37:36 CEST 2000
On Thu, Apr 20, 2000 at 01:20:28PM +0200 , Stepan Cirkl wrote:
> dd
>
> Postgres je siren pod GPL, tedy je absolutne volny. U MySQL si musite v
1) postgresql neni sizen pod GPL, ale spis BSD-like
Copyright. The following copyright applies to the entire distribution:
PostgreSQL Data Base Management System (formerly known as Postgres, then
as Postgres95).
Copyright (c) 1994-7 Regents of the University of California
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose, without fee, and without a written agreement
is hereby granted, provided that the above copyright notice and this
paragraph and the following two paragraphs appear in all copies.
[atd]
2) co si predstavujete pod "absolutne volny"
> nekterych (komercnich) situacich koupit licenci.
mysql JE sireno pod GPL - teda starsi verze
> MySQL je jednodusi, rychlejsi, ale nema podporu transakci, vlozenych funkci
> a nekterych dalsich pokrocilych funkci. Postgres se snazi byt plnohodnotne
> SQL, ma transakce.. a je pomalejsi.
pomalejsi jak v cem. pri read-only databazi pro WWW urcite, pro slozitejsi
SELECTy vitezi (taky tim,ze je mysql vubec nezvlada).
Petr Cech
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