This is the project and its answer in the picture What is needed now Draw class digram for your project

Post by **answerhappygod** » Mon Jun 06, 2022 1:42 pm

: This Is The Project And Its Answer In The Picture What Is Needed Now Draw Class Digram For Your Project 1 (25.26 KiB) Viewed 31 times

: This Is The Project And Its Answer In The Picture What Is Needed Now Draw Class Digram For Your Project 2 (54.09 KiB) Viewed 31 times

Scenario of the problem: the users should login to a portal with their unique id/username and password and they should be able to browse and schedule the their preffered online exam and checkout though online payment gateway, the portal will hold exam types and exam schedules as available, when the schedule time comes, the portal should provide a link to initiate online examing experience guided by a proctor. nouns class Users users(+ core concept) login: core concept) Login Portal with their unique id/username Password unique ide+: core concept) password core concept) Exam types and exam schedules as available available TypesSchedules(+: core concept) Experience guided by proctor ExperienceGuide: core concept) Verbs Class Browse schedule Browse schedule. Checkout through online payment gateway. CheckoutPayment Gateway. When schedule time comes. Provide a line to initial. ScheduleTimeDue. initiallink class Responsibility Aportal Hold exam Types User name/Password To inter to hold The Schedul time Data Save time Proctor Guided User Login

• An item category( seafood, Meat, chicken Eggs) has many items one or more varieties as one to one (1,1) in minimum cardinality and one to many (1,M) in maximum cardinality • A user as a customer may or may not place orders as one to zero(1,0) in minimum cardinality and zero or many (0,M) in maximum cardinality because the register user may view the items and even add to cart but change her mind and may not place order due to some reasons. • Each order can have one or more items but should contain at least one item as one to one (1,1) in minimum cardinality and one to many (1,M) in maximum cardinality since the Order and Items are related through the weak entity Order_Item. • The weak entity Order_ Item has composite primary key( Order Number,Item_ID) as partial keys since the weak entity inherits them from the corresponding strong entities Order and Item • Each order has one payment only as one to one (1,1) in minimum cardinality and one to one (1,1) in maximum cardinality since each order has one payment transaction only at single point of time. The Total Item_Amount is a derived attribute for each item ordered which is derived by calculating as below • Order_Amount is a derived attribute which is updated as the sum of Total_Item_Amount of all items ordered in single Order. Shipping Fee is a derived attribute based on the Order_Amount. Final Amount is a derived attribute updated on payment which is the sum of Order_Amount and Shipping Fee. ER diagram in Crow's foot Model Ga www. T FOR KONU