theantichris

icc97

This plugin is aimed at developers that need to migrate their databases from 
production to test or local domains.
This is the simplest way I’ve found to migrate databases quickly.
You only have to set the <code>WP_HOME</code> 
(<a href="https://codex.wordpress.org/Editing_wp-config.php#WordPress_address_.28URL.29" rel="nofollow ugc">WordPress address URL</a>) 
and <code>WP_SITEURL</code> 
(<a href="https://codex.wordpress.org/Editing_wp-config.php#Blog_address_.28URL.29" rel="nofollow ugc">Blog address URL</a>) 
constants once for each environment and then the database is automatically 
upgraded when you import a database and login to the admin area.
This stands on the shoulders of the constants and fills the hole for when 
plugins don’t follow the rules and use the database directly.
This plugin is designed to be the most lightweight way to migrate your database 
and stay out the way of your own processes.
It works with WordPress to use WordPress’ own constants to update the database 
using the 
<a href="https://codex.wordpress.org/Class_Reference/wpdb" rel="nofollow ugc">WordPress Database Object</a>. 
It avoids search and replaces in text files. It uses database queries to update 
the database as should be done.
Most developers have their own methods for exporting/importing the database – 
if you can use <code>mysqldump</code> then you probably don’t want a WordPress plugin to 
do it for you.
It makes no assumptions about your database and it’s cross platform.
P.S. Pitta is taken from the start of an <a href="http://wordpress.stackexchange.com/a/182/5433" rel="nofollow ugc">answer from WordPress SE</a>:
<blockquote>
Deployment of a WordPress site from one box to another has been a PITA since 
 day one I started working with WordPress. (Truth-be-told it was a PITA with 
 Drupal for 2 years before I started with WordPress so the problem is 
 certainly not exclusively with WordPress.)
</blockquote>
So this plugin aims to make things less PITA and more yummy Pitta (pedants will 
mention that Pitta can also be spelled pita).
Its inspiration actually comes from the <a href="http://wordpress.stackexchange.com/q/119/5433" rel="nofollow ugc">second answer</a> 
from the same <a href="http://wordpress.stackexchange.com/q/119/5433" rel="nofollow ugc">WordPress SE question</a>.
Coincidentally there is a migratory bird called a <a href="https://en.wikipedia.org/wiki/Pitta" rel="nofollow ugc">Pitta</a>:
<blockquote>
The fairy pitta migrates from Korea, Japan, Taiwan and coastal China to Borneo.
</blockquote>
P.P.S. This plugin is based off the excellent <a href="https://github.com/theantichris/WordPress-Plugin-Boilerplate" rel="nofollow ugc">WordPress Plugin Boilerplate</a> from antichris on Github

Pitta Migration

Migrate WordPress databases using WP_HOME and WP_SITEURL constants.

neoslab

Database Toolset can help you to keep your database clean and optimized by deleting all orphaned or unneeded entries such as “transient”, “revision”, “auto draft”, “orphan postmeta” and much more.
Furthermore Database Toolset can be used to optimize your database using the native SQL function in order to increase your website performance and can also be used to organize scheduled database backup which will be saved on your website root.
Major features in Database Toolset include:
<ul>
<li>Remove “revision”, “draft”, “auto draft” from your database.</li>
<li>Remove “moderated comments”, “spam comments”, “trash comments” from your database.</li>
<li>Remove “orphan postmeta”, “orphan commentmeta”, “orphan relationships” and “dashboard transient feed” from your database.</li>
<li>Allow user to perform an “Optimization Process” of his database using native SQL function.</li>
<li>Allow user to configure an automatic backup of the database which will be save in the website root.</li>
</ul>
<h3>License</h3>
Good news, this plugin is free for everyone! Since it’s released under the GPL, you can use it free of charge on your personal or commercial site.

Database Toolset

This extension is really very simple configuration

Great and simple

Database Toolset can help you to keep your database clean by deleting all unneeded entries such as "transient", "revision", "auto draft" and more.

Pitta Migration vs Database Toolset