ER Diagram of Online Sales System Product Products PK Order Departments Product Name Price Cutomer PK Customer Ful Name Order PK Order FK1 Customer FK2 StorelD Sales Amount Date Time Store PK Store Store Name Consider the ER diagram of online sales system above. Based on the diagram answer the questions below, a) Based on the ER Diagram, determine the Foreign Key in the Product Table. Just mention the name of the attribute that could be the Foreign Key (2 marks] b) Mention the relationship between the Order and Customer Entities. You can use the following: 14 Marks! 1:1, 1:1, M:1, 0:1, 1:0, M:0, 0:M Is there a direct relationship that exists between Store and Customer entities? Answer Yes/No? (1 Marks] Which one of the 4 Entities mention in the diagram can have a recursive relationship [1 Marks) 2) If a new entity Order_Details is introduced, will it be a strong entity or week entity if it is a weak entity, then mention its type ID or Non-ID, also Justity why): [2 marks]