Hi,

On Monday, March 4, 2013 2:00:03 PM UTC+1, Aymeric Augustin wrote:
>
> PostgreSQL and Oracle use the "repeatable read" isolation level by 
> default. 


According to http://www.postgresql.org/docs/9.1/static/transaction-iso.html 
PG uses "read commited" as default.
 

> MySQL uses "read committed" and SQLite uses "serializable". Users of these 
> databases 
> may see a different behavior. 
>

For InnoDB the default is "repeatable read"according 
http://dev.mysql.com/doc/refman/5.0/en/set-transaction.html#isolevel_repeatable-read

Cheers,
Florian

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