I have been using Firebird SQL for ten to fifteen years. My company is a partner system integrator of the product.

I don't remember the version of the solution I am using.

I have been using the solution for five years.

I have been using Firebird SQL for 15 years. We are currently using version 2.5, not the latest features.

I have been using it for 20 years. 

I have been using Firebird SQL for eight to ten years.

I have been using the solution since 2000.

I have been using Firebird SQL for approximately one year.

I have been using this solution for six years.

I have been using Firebird SQL for about three years. 

I installed the solution three to five years ago.

I have used Firebird SQL for approximately 20 years.

I started to use Firebird SQL two or three years ago in my previous organization, which specialized in software development. We are also implementing this solution in my current organization, which is into performance applications.