Tip to use collected data in other applications

First of thank you for providing these excellent tools open-source!

I have successfully running the AMI4 in docker and connected it to MySQL (MariaDB) and a meter (Cewe Prometer 100). Imported the Device Template form GXDLMSDirector with some COSEM-objects.
Running fine!

But I have a "missing link" in my knowledge to get access to the data from other applications.
I thought that I could query the SQL database but i seams hard. And it also seams difficult thought the REST also.

I wish to retrieve the data from a ProfileGeneric Object with time and data. Preferably with option of time-range.

Could you give me a tip on the way?
Below is a snippet by inspecting the COSEM object. I have already run the read command, collection approx 7 month of 15 minutes interval data