Create an API to save on object to the db

I’ve been searching but could not find and example on how create an API to save a record to the database. I started with this:

Then to edit the logic I need to identify the table to save to but cannot find the correct block for this.

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Is there any docs on this part or can you please tell me the next step?

Thanks.

The following video describes precisely what you are asking about:

Regards,
Mark

Perfect, Thanks!