How to perform 'Connect to PostgreSQL' in OCaml.
(* Task: Connect to PostgreSQL
(* Language: OCaml
let connect_to_postgresql() =
(* Implementation for Connect to PostgreSQL
let result = ...; (* Initialize variable
(* TODO: Implement core logic here
(* Step 1: Prepare data
(* Step 2: Process Connect to PostgreSQL
print_endline("Done");
;;