I have this system, ERD (Entity-Relationship Diagram) Explanation: The ERD is a high-level representation of the data relationships in the ConfPlus Conference Management System. It shows the main entities, their attributes, and the relationships between them. Entities: User: Represents a user in the system, including authors, reviewers, and organizers. Attributes include UserID, Name, Email, Password, Affiliation, and Role. Paper: Represents an academic paper submitted to the conference. Attributes include PaperID, Title, Abstract, PDF, and SubmissionDate. Authorship: Represents the relationship between a User (author) and a Paper. Attributes include AuthorshipID, UserID, PaperID, and IsPresenter (to indicate if the author is the presenter of the paper). Review: Represents a review assigned to a paper by a User (reviewer). Attributes include ReviewID, UserID, PaperID, OverallEvaluation, Contribution, Strengths, Weaknesses, and ReviewDate. Conference: Represents the conference itself. Attributes include ConferenceID, Name, StartDate, and EndDate. Session: Represents a conference session. Attributes include SessionID, ConferenceID, Title, Location, and Date. Presentation: Represents a paper presentation within a conference session. Attributes include PresentationID, SessionID, PaperID, PresenterUserID, and TimeSlot. Relationships: User - Authorship: One-to-Many (A user can be an author of multiple papers, and a paper can have multiple authors) Paper - Authorship: One-to-Many (A paper can have multiple authors, and an author can be associated with multiple papers) Paper - Review: One-to-Many (A paper can have multiple reviews, and a reviewer can review multiple papers) User - Review: One-to-Many (A user can review multiple papers, and a paper can be reviewed by multiple users) Conference - Session: One-to-Many (A conference can have multiple sessions) Session - Presentation: One-to-Many (A session can have multiple presentations) Paper - Presentation: One-to-One (Each presentation is associated with one paper) I did ER diagram need a a class diagram : I have 5 use cases: Use Case 1: Login It allows users to login to use the app using their email and password. Use Case 2: Submit a paper 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 , email and affiliation). o Author selects the paper pdf and submits 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. 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) Postcondition: Review is submitted to the system. • Use Case 4: Create/update conference schedule Precondition: User is logged in as an organizer and has access to the accepted papers and presenters. Organizer navigates to the schedule editor page. Organizer can add/update/delete sessions. Postcondition: Conference schedule is saved and can be viewed by visitors. Use Case 5: Get conference schedule Allow visitors to get the conference schedule But provide the user the ability to filter the schedule and get the 2 sessions scheduled for a particular conference date. I need Class diagram for that please

I have this system, ERD (Entity-Relationship Diagram) Explanation: The ERD is a high-level representation of the data relationships in the ConfPlus Conference Management System. It shows the main entities, their attributes, and the relationships between them. Entities: User: Represents a user in the system, including authors, reviewers, and organizers. Attributes include UserID, Name, Email, Password, Affiliation, and Role. Paper: Represents an academic paper submitted to the conference. Attributes include PaperID, Title, Abstract, PDF, and SubmissionDate. Authorship: Represents the relationship between a User (author) and a Paper. Attributes include AuthorshipID, UserID, PaperID, and IsPresenter (to indicate if the author is the presenter of the paper). Review: Represents a review assigned to a paper by a User (reviewer). Attributes include ReviewID, UserID, PaperID, OverallEvaluation, Contribution, Strengths, Weaknesses, and ReviewDate. Conference: Represents the conference itself. Attributes include ConferenceID, Name, StartDate, and EndDate. Session: Represents a conference session. Attributes include SessionID, ConferenceID, Title, Location, and Date. Presentation: Represents a paper presentation within a conference session. Attributes include PresentationID, SessionID, PaperID, PresenterUserID, and TimeSlot. Relationships: User - Authorship: One-to-Many (A user can be an author of multiple papers, and a paper can have multiple authors) Paper - Authorship: One-to-Many (A paper can have multiple authors, and an author can be associated with multiple papers) Paper - Review: One-to-Many (A paper can have multiple reviews, and a reviewer can review multiple papers) User - Review: One-to-Many (A user can review multiple papers, and a paper can be reviewed by multiple users) Conference - Session: One-to-Many (A conference can have multiple sessions) Session - Presentation: One-to-Many (A session can have multiple presentations) Paper - Presentation: One-to-One (Each presentation is associated with one paper) I did ER diagram need a a class diagram : I have 5 use cases: Use Case 1: Login It allows users to login to use the app using their email and password. Use Case 2: Submit a paper 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 , email and affiliation). o Author selects the paper pdf and submits 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. 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) Postcondition: Review is submitted to the system. • Use Case 4: Create/update conference schedule Precondition: User is logged in as an organizer and has access to the accepted papers and presenters. Organizer navigates to the schedule editor page. Organizer can add/update/delete sessions. Postcondition: Conference schedule is saved and can be viewed by visitors. Use Case 5: Get conference schedule Allow visitors to get the conference schedule But provide the user the ability to filter the schedule and get the 2 sessions scheduled for a particular conference date. I need Class diagram for that please

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

I have this system,

ERD (Entity-Relationship Diagram) Explanation:

The ERD is a high-level representation of the data relationships in the ConfPlus Conference Management System. It shows the main entities, their attributes, and the relationships between them.

Entities:

User: Represents a user in the system, including authors, reviewers, and organizers. Attributes include UserID, Name, Email, Password, Affiliation, and Role.
Paper: Represents an academic paper submitted to the conference. Attributes include PaperID, Title, Abstract, PDF, and SubmissionDate.
Authorship: Represents the relationship between a User (author) and a Paper. Attributes include AuthorshipID, UserID, PaperID, and IsPresenter (to indicate if the author is the presenter of the paper).
Review: Represents a review assigned to a paper by a User (reviewer). Attributes include ReviewID, UserID, PaperID, OverallEvaluation, Contribution, Strengths, Weaknesses, and ReviewDate.
Conference: Represents the conference itself. Attributes include ConferenceID, Name, StartDate, and EndDate.
Session: Represents a conference session. Attributes include SessionID, ConferenceID, Title, Location, and Date.
Presentation: Represents a paper presentation within a conference session. Attributes include PresentationID, SessionID, PaperID, PresenterUserID, and TimeSlot.

Relationships:

User - Authorship: One-to-Many (A user can be an author of multiple papers, and a paper can have multiple authors)
Paper - Authorship: One-to-Many (A paper can have multiple authors, and an author can be associated with multiple papers)
Paper - Review: One-to-Many (A paper can have multiple reviews, and a reviewer can review multiple papers)
User - Review: One-to-Many (A user can review multiple papers, and a paper can be reviewed by multiple users)
Conference - Session: One-to-Many (A conference can have multiple sessions)
Session - Presentation: One-to-Many (A session can have multiple presentations)
Paper - Presentation: One-to-One (Each presentation is associated with one paper)

I did ER diagram

need a a class diagram :

I have 5 use cases:

Use Case 1: Login
It allows users to login to use the app using their email and password.

Use Case 2: Submit a paper
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
, email and affiliation).

o Author selects the paper pdf and submits 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.
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)

Postcondition: Review is submitted to the system.
• Use Case 4: Create/update conference schedule
Precondition: User is logged in as an organizer and has access to the accepted papers and presenters.

Organizer navigates to the schedule editor page.

Organizer can add/update/delete sessions.
Postcondition: Conference schedule is saved and can be viewed by visitors.
Use Case 5: Get conference schedule
Allow visitors to get the conference schedule

But provide the user the ability to filter the schedule and get the
2

sessions scheduled for a particular conference date.

I need Class diagram for that please

E) User
o UserID: int
Name: string
Email: string
Password: string
Affiliation: string
Role: string
1..*
E) Paper
o PaperID: int
Title: string
Abstract: string
PDF: file
Submission Date: date
1..* 1..*
E) Authorship
o AuthorshipID: int
UserID: int
□ PaperID: int
IsPresenter: boolean
1
*
E) Review
o ReviewID: int
□ UserID: int
□ PaperID: int
Overall Evaluation: int
Contribution: int
Strengths: string
Weaknesses: string
ReviewDate: date
E Conference
o ConferenceID: int
Name: string
StartDate: date
EndDate: date
1..*
E Session
o Session ID: int
ConferenceID: int
Title: string
Location: string
Date: date
1..*
(E) Presentation
o Presentation ID: int
Session ID: int
□ PaperID: int
□ PresenterUserID: int
TimeSlot: time

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