> It is true that this Flex is similar to C# / JAVA
ActionScript is an object-oriented procedural language like C# and Java. MXML is an XML-based declarative language like XHTML and XAML.
> I'm programmator PHP (from 4 to 5.3) and database MYSQL...
Flex is client-side software that can work with many different kinds of server-side software, including PHP and MySQL.
> This software Flex, can i create CMS, INVOICES, ACCOUNTING, BUDGET?
Adobe Flex SDK Team
Oh thank you very much...
From August i start to study Flex...
But, a curiosity..
Have you see this site https://www.photoshop.com?
You see that every pictures is moved?
What do you think which programme have create?
For you, it is to be create only Flex or only Flash or Flex and Flash?
These pictures that moved, i know that is used ACTIONSCRIPT 3.0, but for you, create only Flex using these pictures that moved without used Flash and Actionscript?
They could've used flash, they could've used flex...
but they definitely used ActionScript.