Convert the following UML to relational model. Pls use diagrams to show the answer. Also include which are the primary and foreign keys.

\begin{tabular}{|l|} \hline \multicolumn{1}{|c|}{ Rooms } \\ \hline +RoomNo: int \\ +Location: string \\ \hline \end{tabular} \begin{tabular}{|l|} \hline \multicolumn{1}{|c|}{ Bill } \\ \hline +BillNo: string \\ +PatientName: string \\ +Amount: float \\ \hline \end{tabular}