draw an erd for - An order can consist of one or many line items and each line item corresponds to a product. Conversely, a product can be purchased through different orders. For example, OrderNo 100 contains product X, Y, and Z; product X is purchased by OrderNo 100, 105, and 109. The identifier for the Product entity is ProdID. OrderNo and ProdID together forms a composite identifier for the Line Item entity. Products without a sales order within 9 months will be discontinued.