Create a domain model class diagram for the WPE, including all classes, attributes, associations, and multiplicity. Show association classes and generalisation hierarchies where appropriate. The case study: Weddings, Parties, Everything Catering Services SystemJust about every event these days is expected to have a professionally catered menu toaccompany it. Weddings, conferences, corporate events, birthdays, anniversaries,graduations and parties are just some of the different types of events where people want tohave that special food and drink experience.Weddings, Parties, Everything is a rapidly-growing online business that links togethercustomers who need a caterer for their event with businesses that provide catering.Customers input their location and requirements, and are presented with a shortlist ofpotential caterers who may be able to provide what they need. WPE is somewhat similar inconcept to the catering service provided through One Flare athttps://www.oneflare.com.au/cateringWPE has been partly manual for the first few months of their operation, but now needs anew system to automate their business of putting together the right customer with the rightcaterer. They intend to roll the system out nationally, from their original base in WA. EdisonGuacamole, the owner/manager of WPE, has contacted you for help.The two sides to the system are, of course, the caterers and the customers. Caterers registeron the WPE system by providing their business name, description, types of services theyprovide (selected from a list), their location (city and postcode), link to their own website,and contact email. 'Verified' caterers are those that have provided their ABN, businessname, logo, and proof of current Public Liability or Professional Indemnity insurance to thesystem. Using a verified caterer provides additional confidence to customers that they areusing a legitimate business.If they choose, the caterer can also advertise themselves as having an 'On-Time Guarantee'.This means that they guarantee to provide the service on time, and if they are more thanhalf an hour after the scheduled time will reimburse the customer $100. Caterers can alsouse reviews from previous satisfied customers in their profile, and their average rating bycustomers.Caterers pay to use the WPE system: this is done through purchasing a number of 'credits'when they register. Payment for credits is done through PayPal outside of the WPE system,although WPE also keeps a record of the transactions. Credits are used for preparing quotesfor customers, with every quote costing the same number of credits. Credits expire afterthree months, and the system will notify the caterer that they need to purchase morecredits in order to be able to quote. The system also notifies the caterer if they have run outof credit.Customers do not need to pay in order to use the WPE system. When a customer requires aquote for a catering job, they submit their requirements through an online form. Theysupply their postcode location and a list of requirements, including type of event (buffet,dinner party, food truck, cocktail party, etc); broad type of cuisine (Australian, French,Chinese, Mexican, Indian, etc); number of people to be catered for; budget per person;service required (delivery only, wait staff, bar staff, etc), date of event, and any further2. instructions. They also supply an email address they can be contacted through. This emailaddress also provides them with access to their account where they can see the status of alltheir job requests. The account is created when they submit their first job request.Once the customer request for a catering job has been submitted, the WPE system matchesthe request with the catering services that are registered with it, and determines the threecaterers that could best meet the customer's requirements. These caterers are then notifiedvia email that there is an open request for quotation.The caterers then respond to the customer with a detailed quote. The quote includes thecost estimate, a flag indicating whether further information is required for a completequote, and any comments. This information is provided in an online form that the caterercompletes and the system sends to the customer.The customer receives an email including the same information that the caterer hasprovided in the quote form. The caterer and the customer may then discuss the job directly(outside the WPE system) in order to arrive at a final decision. To help make up their mind,the customer may also read more about the caterer in the profile they have provided toWPE, the caterer's own website, and in the reviews that have been posted to WPE.Once the customer has decided on a caterer, they return to their account on the WPE siteand choose the 'hired' option against the relevant caterer's quote for the job request. Whenthis has been done, the other caterers who quoted are automatically notified that theirquote was unsuccessful. If none of the quotes suits the customer, they may choose to enter'unsuccessful' directly against the quotes.If no quotes are received within 48 hours of posting the job request the customer is notifiedand the request is closed. A customer may also decide that they wish to cancel the jobrequest any time before making a booking, and record this against the job request in theirасcount.Customers are encouraged to provide feedback on the service that their caterer hasprovided. After the job is completed, the customer can log in to their account and leave a 5-star rating and associated comment against the job. To prevent spurious reviews, it is onlypossible to post a review for a service that is recorded as being booked by that customer.When the review is posted, the feedback recorded against the caterer is updated for otherpotential customers to browse through on the WPE site.Obviously, the success of WPE depends on its ability to provide the best caterers for acustomer so that they can be confident in using it. Various summary reports are providedeach month so that Edison can monitor the health of the business. These include thepercentage of quotes that were successful in obtaining a booking for a catering job; and theaverage satisfaction rating of completed catering jobs. The revenue to WPE in terms ofpayments for credit is also reported, broken down for each capital city.3

Question

Create a domain model class diagram for the WPE, including all classes, attributes, associations, and multiplicity.  Show association classes and generalisation hierarchies where appropriate. The case study: Weddings, Parties, Everything Catering Services SystemJust about every event these days is expected to have a professionally catered menu toaccompany it. Weddings, conferences, corporate events, birthdays, anniversaries,graduations and parties are just some of the different types of events where people want tohave that special food and drink experience.Weddings, Parties, Everything is a rapidly-growing online business that links togethercustomers who need a caterer for their event with businesses that provide catering.Customers input their location and requirements, and are presented with a shortlist ofpotential caterers who may be able to provide what they need. WPE is somewhat similar inconcept to the catering service provided through One Flare athttps://www.oneflare.com.au/cateringWPE has been partly manual for the first few months of their operation, but now needs anew system to automate their business of putting together the right customer with the rightcaterer. They intend to roll the system out nationally, from their original base in WA. EdisonGuacamole, the owner/manager of WPE, has contacted you for help.The two sides to the system are, of course, the caterers and the customers. Caterers registeron the WPE system by providing their business name, description, types of services theyprovide (selected from a list), their location (city and postcode), link to their own website,and contact email. 'Verified' caterers are those that have provided their ABN, businessname, logo, and proof of current Public Liability or Professional Indemnity insurance to thesystem. Using a verified caterer provides additional confidence to customers that they areusing a legitimate business.If they choose, the caterer can also advertise themselves as having an 'On-Time Guarantee'.This means that they guarantee to provide the service on time, and if they are more thanhalf an hour after the scheduled time will reimburse the customer $100. Caterers can alsouse reviews from previous satisfied customers in their profile, and their average rating bycustomers.Caterers pay to use the WPE system: this is done through purchasing a number of 'credits'when they register. Payment for credits is done through PayPal outside of the WPE system,although WPE also keeps a record of the transactions. Credits are used for preparing quotesfor customers, with every quote costing the same number of credits. Credits expire afterthree months, and the system will notify the caterer that they need to purchase morecredits in order to be able to quote. The system also notifies the caterer if they have run outof credit.Customers do not need to pay in order to use the WPE system. When a customer requires aquote for a catering job, they submit their requirements through an online form. Theysupply their postcode location and a list of requirements, including type of event (buffet,dinner party, food truck, cocktail party, etc); broad type of cuisine (Australian, French,Chinese, Mexican, Indian, etc); number of people to be catered for; budget per person;service required (delivery only, wait staff, bar staff, etc), date of event, and any further2. instructions. They also supply an email address they can be contacted through. This emailaddress also provides them with access to their account where they can see the status of alltheir job requests. The account is created when they submit their first job request.Once the customer request for a catering job has been submitted, the WPE system matchesthe request with the catering services that are registered with it, and determines the threecaterers that could best meet the customer's requirements. These caterers are then notifiedvia email that there is an open request for quotation.The caterers then respond to the customer with a detailed quote. The quote includes thecost estimate, a flag indicating whether further information is required for a completequote, and any comments. This information is provided in an online form that the caterercompletes and the system sends to the customer.The customer receives an email including the same information that the caterer hasprovided in the quote form. The caterer and the customer may then discuss the job directly(outside the WPE system) in order to arrive at a final decision. To help make up their mind,the customer may also read more about the caterer in the profile they have provided toWPE, the caterer's own website, and in the reviews that have been posted to WPE.Once the customer has decided on a caterer, they return to their account on the WPE siteand choose the 'hired' option against the relevant caterer's quote for the job request. Whenthis has been done, the other caterers who quoted are automatically notified that theirquote was unsuccessful. If none of the quotes suits the customer, they may choose to enter'unsuccessful' directly against the quotes.If no quotes are received within 48 hours of posting the job request the customer is notifiedand the request is closed. A customer may also decide that they wish to cancel the jobrequest any time before making a booking, and record this against the job request in theirасcount.Customers are encouraged to provide feedback on the service that their caterer hasprovided. After the job is completed, the customer can log in to their account and leave a 5-star rating and associated comment against the job. To prevent spurious reviews, it is onlypossible to post a review for a service that is recorded as being booked by that customer.When the review is posted, the feedback recorded against the caterer is updated for otherpotential customers to browse through on the WPE site.Obviously, the success of WPE depends on its ability to provide the best caterers for acustomer so that they can be confident in using it. Various summary reports are providedeach month so that Edison can monitor the health of the business. These include thepercentage of quotes that were successful in obtaining a booking for a catering job; and theaverage satisfaction rating of completed catering jobs. The revenue to WPE in terms ofpayments for credit is also reported, broken down for each capital city.3

Accepted Answer

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