For our Expenditure (Purchases-Payments) cycle, we want to store the following data about our purchases of inventory: item number date of purchase vendor number vendor address vendor name purchase price quantity purchased employee number employee name purchase order number description quantity on hand extended amount total amount of purchase a. Semantically create a conceptual design (entity-relationship diagram) with max cardinalities. b. Design a set of properly normalized relational tables to store the data, using the following format: Table Name Primary Key Foreign Key(s)(?) Other non- key attributes.