Migrate Joomla! Website
If you want to migrate Joomla! from version 1.0 "something" to the newest 2.5.?, there are a number of processes and hurdles to endure. Upgrade Joomla! or migrate Joomla! is often considered the same. However, they are completely different operations.
Content Management System
Content Management System Description
A content management system (CMS) is the software used to control the content displayed in a Website. The CMS uses a database to store the content as well as all instructions for the Website.
Database for a Website
A database allows you to store information, data, and perform complex operations. It's a "must have" for any site selling a large number of products or services. A database generates what is commonly known as "dynamic" pages - pages created only when a user selects a particular link.