You are required to design and implement a Conference Management System named ConfPlus to manage the process of organizing and running an academic conference. It should be designed to meet the needs of all stakeholders involved in the conference, including organizers, authors, and reviewers. You can familiarise yourself with the various notions around the management of an academic conference by visiting some important conferences such the Web Conference, the International Conference on Software Engineering (ICSE). The app use cases include: It allows users to login to use the app using their email and password. Precondition: User is logged in as an author and has a paper to submit. o Author enters the paper details including the paper title and abstract and authors (including name , email and affiliation). One of the authors should be marked as the Presenter. . This file should have sample data such as ‘Qatar University’, ‘University of Doha for Science and Technology’, ‘Carnegie Mellon University in Qatar’. o Author selects the paper pdf and submits the paper. o Upon submission, the app should upload the paper PDF to server, randomly auto assign to 2 reviewers to the paper) . Postcondition: Paper is submitted for review. Use Case 3: Review paper Precondition: User is logged in as a reviewer and has been assigned a paper to review. o Reviewer gets the list of assigned papers from papers.json. The list should display the paper title, authors, abstract and a link to download the paper. The abstract could be made collapsible to allow hiding it. Note that a paper can have a dynamic list of authors (could be 1, 2, 3, 4 or more authors), the app should allow adding and removing the paper authors o Reviewercanselectapapertoreviewfromthelistofassignedpapers.Iftherevieweralready reviewed the paper earlier, then the review should be loaded into the review form and allow the user to change it otherwise an empty review form should be displayed. The review form should include: Overall evaluation: 2: strong accept 1: accept 0: borderline -1: reject -2: strong reject Paper contribution: 5: a major and significant contribution 4: a clear contribution 3: minor contribution 2: no obvious contribution 1: no obvious contribution Paper strengths: (multiline text) Paper weakness: (multiline text Precondition: User is logged in as an organizer and has access to the accepted papers and presenters. First note that a conference schedule has sessions, and a section has paper presentations. Organizer navigates to the schedule editor page Organizer can add/update/delete sessions. A session should have a title, a location, and a date Postcondition: Conference schedule is saved and can be viewed by visitors. Use Case 5: Get conference schedule Allow visitors to get the conference schedule the ability to filter the schedule and get the 2 sessions scheduled for a particular conference date Need ER diagram for it and class diagram #Database