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On 10/10/2012 10:47 AM, Vineet Deodhar
wrote:
Hi !
At present, I am using MySQL as backend for my work.
Because of the licensing implications, I am considering to shift
from MySQL to pgsql.
Typically, my apps are multi-user, web based or LAN based.
1) Read over the internet that ---
Postgres is not threaded, but every connection gets it's own
process. The OS will distribute the processes across the
processors. Basically a single connection will not be any faster
with SMP, but multiple connections will be.
MySQL is multi-threaded server so it can use many processors. A
separate thread is created for each connection.
source: http://dcdbappl1.cern.ch:8080/dcdb/archive/ttraczyk/db_compare/db_compare.html#Comparison+of+Oracle%2C+MySQL+and+Postgres+DBMS
In what way it might affect my app performance?
Performance will not be affected negatively. MySQL only has one
thread per connection, so a single query will never use multiple
threads (scary concept to think about).
2) I run MySQL from a USB stick.
There is no installation required (on WinXP.). (not tried on
Ubuntu)
Is it the same for pgsql?
To use postgres on a USB stick, see
http://www.postgresonline.com/journal/archives/172-Starting-PostgreSQL-in-windows-without-install.html
3) Can I simulate MySQL's TINYINT data-type (using
maybe the custom data type or something else)
You can either use bool or smallint with a constraint.
Sim
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