Converting to Drupal

Hi,

I work for a company that uses a bespoke CRM. It was built in-house and is a web based application approximately used by 100 people globally across several sites connected by WAN and VPN site-to-site connections. It's written in Microsoft .NET and ASP.net in C# with a MySQL community edition for its data repository.

We get an error: Field is part of a circular dependency. This is not supported and you will not be able to switch it on.
Field SQL storage is part of a circular dependency. This is not supported and you will not be able to switch it on.

This was from a php script to pull in data from the database. Is this an issue with our Drupal version or with the code?

Is this too big of a leap? What is the most efficient way to upgrade and transfer all of our current data? We are trying to go from Drupal 6 to Drupal 8.

Hello Experts,

I have developed a site in Dreamweaver/MS Access and am hopefully going to get it together in Drupal.

As a learning curve, could any of you guys point me in the right direction as a beginner. I have got past the "install and play about with stage" and now would like to crack on. A good book suggestion would help as I need to get to grips with the database and displaying results. I need some help please.

To save an explanation please see
http://www.nazeinghackers.com

Test

i m having a website www.eAhmadnagar.com currently i m using joomla 3.2 but i m facing some problems. i want to safely migrate on drupal 8.x without losing anything such as articles, categories, tags, links, photos, etc. i m new to drupal. i don't know how to safely migrate. plz anyone can help me out from this ?