Draw ER diagram with cardinality panel.

Purchase order in Al-Quds university:

The system has some data about the supplier and their branches. These data are:

Supplier name, supplier address and each supplier has at least one branch, for each branch has a name, address, phone, email and contact person.

In PO system we have a simple database for each inventory "items" which store some data for each inventory like:

Inventory id, name, unit.

Every month we make a PO and send it to specific supplier to purchase inventory, we keep track of the PO ID, PO date, PO state, supplier Branch and the PO items with qty, unit and the price for each item.

For these requirements please draw ER diagram with cardinality panel.