An online web store specialized of selling wedding dresses presents its goods on their website among other accessories. Customers can navigate through the website to view different kinds of dresses and accessories, besides the ability of booking or buying a dress through the website after signing up or login. Customers can order available items, the quantity, the shipping type and company and the paying type: cash on delivery or through credit card. Website manager can add, edit and delete customer and can edit or delete customers' orders. To dos: Create a data flow diagram. a. Context diagram b. Diagram 0 Create a use case diagram for: a. Customer registration subsystem. b. The purchasing subsystem Activity diagram for the main functionalities. Sequence diagram for: a. Customer registration b. Placing an order Class diagrams and relationships for: a. Customer management b. The items management subsystem c. The purchasing subsystem d. The Ordering Sale System The objective of this case study is to highlight the best practices of software development phases through the uses of UML diagrams. Best of Luck