Unless you have make an attempt to change the table prefix before installing your WordPress blog, chances are that your WP database is still using the default ‘wp_’ as the table prefix. With this default prefix, hackers can easily perform a SQL injection attacks on your database and wreak havoc to your site. The best way to prevent this from happening is to change the table prefix to another term that is difficult for hackers to guess.

If you are new to blogging and are looking to install your first WordPress blog, then it is easy. Simply change the $table_prefix entry in wp-config.php file, upload the file to the server, then proceed on with the famous 5-mins installation.

For those who have already been blogging for sometime, follow the method below to change your table prefix.

Being a database-driven software, the performance of your WordPress blog is closely related to how efficient your database is. The bigger and messier your database is, the slower is the performance of your blog.

If you have not been doing regular housekeeping and database maintenance, either because you don’t know how to do or you are just plain lazy, here are 8 useful tricks that you can use to clean up your WordPress database easily and quickly.