What is the MySQL Equivalent of SQL CE? - mysql

Question

I'd like to know if WordPress can be pointed at the DB equivalent of SQL CE. I presume the answer is yes, if MySQL has something equivalent to SQL CE.
What's the low down on this?
Update: Given the answers so far, I will re-state my question so that it is more easily understood: "Can WordPress be pointed at SQLite instead of MySQL?"

Answer 1

I'd like to know if WordPress can be pointed at the DB equivalent of SQL CE
No.
Or at least not easily. WordPress is built on top the LAMP stack where M is strictly MySQL. Although it has a database abstraction layer (WPDB), the code and plugins are littered and accept direct SQL code (MySQL).
If you are interested in this, check out the discussion in the WP Codex.
What is the MySQL Equivalent of SQL CE?
In my opinion, I'd make the jump and say SQLite.

Answer 2

As far as I'm aware there is no MySQL equivalent of SQL Compact Edition. You may want to check SQLite instead (www.sqlite.org). Wordpress supports this.

Answer 3

You may find this surprising but MySQL can be stripped down to operate like a Compact Edition database. MySQL (eh Oracle) does not seem to support the Embedded MySQL anymore (or at least they make hard to find). However, you can make the following tweeks to MySQL:
TWEEK #1 : Disable InnoDB
Start mysqld with this in my.cnf:
[mysqld]
skip-innodb
Benefits
Faster startup of mysql
Does not create ibdata1, ib_logfile0, ib_logfile1
Does not allocate default InnoDB Buffer Pool (MySQL 5.5 128M, before MySQL 5.5 8MB)
Less memory consumption (InnoDB code is not memory resident)
TWEEK #2 : Preload Indexes of the Most Important MyISAM Tables
By default, MyISAM uses the Key Cache and its size is governed by key_buffer_Size. Interestingly, MyISAM allows you to create a dedicate key cache for onr ot more tables.
For example, if you have the table mysite.wp_posts, you can create a dedicated 256M key cache as follows:
SET GLOBAL wp_posts_cache.key_buffer_size = 1024 * 1024 * 256;
CACHE INDEX mysite.wp_posts IN wp_posts_cache;
LOAD INDEX INTO CACHE mysite.wp_posts;
You can have this done at start by doing this:
echo "SET GLOBAL wp_posts_cache.key_buffer_size = 1024 * 1024 * 256;" > /var/lib/mysql/startup.sql
echo "CACHE INDEX mysite.wp_posts IN wp_posts_cache;" > /var/lib/mysql/startup.sql
echo "LOAD INDEX INTO CACHE mysite.wp_posts;" > /var/lib/mysql/startup.sql
Give it a Try !!!
then add this to my.cnf
[mysqld]
init-file=/var/lib/mysql/startup.sql
Then, restart mysql