This example appends a new record to a table when the user clicks a button. The two fields with
names ALPHANUMERICFIELD and INTEGERFIELD are filled from the contents of two edit controls.
procedure TForm1.Button1Click(Sender: TObject);
begin
PSQLTable1.Append;
PSQLTable1.FieldValues['ALPHANUMERICFIELD'] := Edit1.text;
PSQLTable1.FieldValues['INTEGERFIELD'] := StrToInt(Edit2.text);
PSQLTable1.Post;
end;