Presentation and final testing

Our multi-database system is ready. We have the layers developed for SQL Server and PostgreSQL, and each database is activated according to an option in an INI-type configuration file.

Before we perform the implementation on the main form, we need to remove the self-creation mode data modules in the project settings, so that the application will control the form creation events. This is also important so that we do not have multiple unnecessary instances of our forms and/or data modules.

Data presentation

We need to ensure that all the work developed throughout this chapter can ultimately be consumed in the presentation layer of the system (form). The cherry on the cake is that you just declare...