Er图/数据库管理

Question

how can Show below details in er * YY Owns many equipment such as burners, tables, serving dishes, cups and etc. Under equipment type there can be many units. For each unit purchased date, price should be logged. Equipment is owned by a branch.

Answer 1

1) 创建表 product (product_id number, product_name varchar2(300), type_product varchar2 (300)) 2) 创建表 branch (branch_id number, branch_name varchar2(300) 3) 创建表 price (product_id number, branch_id number, price number,数量_产品编号 )