[OpenMap Users] database connectivity

Hi all,
I am a student researching a GIS project and recently discovered OpenMap.
I intend, in the long run, to connect the client to a PostgreSql db with the PostGIS spatial extension.
So far I have manually transferred some city data from the cities.csv file to the native PostgreSql db (simple character and numeric data) and can now retrieve/display this data using the DBLocationHandler class.
I feel the next step for me is to try to display a simple geometry (for example a circle, which is implemented in the native postgresql, no need for PostGIS for this) retrieved from the db. However, I am not sure where to begin. Are there any classes that can retrieve geometries from a remote db?
What are the classes that I need to become familiar with?

Sorry if my questions are a bit newbie.

Thanks in advance
Declan Lynch

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