Re: MySQL Cluster

[Mat Keep]

Hi Joan
replication is actually more functional in MySQL Cluster than with InnoDB:
- You have support for synchronous replication between data nodes within 
the cluster.
- If you want to replicate that cluster to a remote data center (or 
another rack within the same data center), then you can use MySQL's 
native asynchronous replication, but unlike InnoDB, this is 
Active/Active, so the cluster will detect and handle conflicts for you

MySQL Cluster does not support Foreign Keys today.  You can use triggers 
as an alternative - this article demonstrates how to do that:
http://dev.mysql.com/tech-resources/articles/mysql-enforcing-foreign-keys.html

Are your Foreign Key requirements for constraint checking, or do you 
need functionality like cascading updates and deletes as well?

On 31/10/2011 10:03, joan agusti martinez carbonell wrote:
> Hi,
>
> I have a three servers with mysql cluster, 1 node of managment and 2 nodes of data.
> The replication works very good but when I create a database I didn't have foreign keys.
> My question is, in labs you have a version mysql-cluster-gpl-7.2.2-labs-memcached, this
> version supports foreign keys? If it's necesary for me have foreign keys and replication
> the correct option is InnoDB?
>
> Excuse my bad english,
>
> Thank You,
>
> Joan.
>
>

-- 
Regards

Mat Keep
MySQL Cluster&  HA Programs
Oracle Corp.
[phone]