Creating access control into Lazarus + Firebird applications

This is a getting started article (written in Portuguese) from a series of articles related to Firebird and Lazarus
In the first part it’s explained how to install Lazarus and Firebird/Flamerobin on Ubuntu

I have been implementing the access control on my applications. It is a simple model, I have been “improving” since I started the program and always adapting to the new reality that has been presented. Not the last word on programming, but I believe it can be a good start for those who want to implement something from scratch.