Please dont forget arrows ### Entity-Relationship Diagram (ERD) DescriptionThe diagram is an ERD showing relationships between entities `Student`, `Mail_Box`, `Section`, and `Course`. Below is a detailed explanation:#### Entities and Attributes1. **Student** - Attributes: - `S_ID` (Primary Key) - `First` (Part of the name, possibly a composite attribute) - `Last` (Part of the name, possibly a composite attribute) - `Phone#` - Relationships: - `Student` is assigned to `Mail_Box` (1 to 1) - `Student` takes `Section` (1 to N)2. **Mail_Box** - Attributes: - `MailBoxNo` (Primary Key) - `Location` - Relationships: - Assigned to a `Student` (1 to 1)3. **Section** - Attributes: - `Sec_ID` (Primary Key) - `No_of_students` - Relationships: - `Section` has `Course` (1 to 1, 0 to N) - Taken by `Student` (M to N)4. **Course** - Attributes: - `C_ID` (Primary Key) - `Title` - Relationships: - Included in `Section` (0 to N)#### Relationships- **Assigned**: One-to-one relationship between `Student` and `Mail_Box`.- **Take**: Many-to-many relationship between `Student` and `Section` with a grade attribute.- **Have**: One-to-many relationship between `Section` and `Course`.### Description of Relationships- **Student ↔ Mail_Box**: Each student is assigned exactly one mailbox, and each mailbox is assigned to exactly one student.- **Student ↔ Section**: A student can take multiple sections, and each section can have multiple students. The relationship is further characterized by a `Grade` attribute, indicating the performance or result of the student in that section.- **Section ↔ Course**: Each section can correspond to one course, but multiple sections can exist for a single course.This ERD successfully outlines the relationships, constraints, and key attributes required to convert it into a database schema. The primary and foreign keys identified in this diagram ensure the integrity and organization of data within the specified tables.

Answered: Image /qna-images/answer/f1deba3a-2ada-4524-b218-7d716b472564.jpg

[2] Please convert following ERD to a schema. In each table, the primary key and foreign keys (arrows) must be identified. | Phone# MailBoxNo S_ID First Student 1,1 assigned 1,1 Mail Box BO name location Last 1,N take Grade 1,M C_ID Sec ID Section. have 0,n Course Title No_of_students

[2] Please convert following ERD to a schema. In each table, the primary key and foreign keys (arrows) must be identified. | Phone# MailBoxNo S_ID First Student 1,1 assigned 1,1 Mail Box BO name location Last 1,N take Grade 1,M C_ID Sec ID Section. have 0,n Course Title No_of_students

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Please dont forget arrows

### Entity-Relationship Diagram (ERD) Description

The diagram is an ERD showing relationships between entities `Student`, `Mail_Box`, `Section`, and `Course`. Below is a detailed explanation:

#### Entities and Attributes

1. **Student**
- Attributes:
- `S_ID` (Primary Key)
- `First` (Part of the name, possibly a composite attribute)
- `Last` (Part of the name, possibly a composite attribute)
- `Phone#`
- Relationships:
- `Student` is assigned to `Mail_Box` (1 to 1)
- `Student` takes `Section` (1 to N)

2. **Mail_Box**
- Attributes:
- `MailBoxNo` (Primary Key)
- `Location`
- Relationships:
- Assigned to a `Student` (1 to 1)

3. **Section**
- Attributes:
- `Sec_ID` (Primary Key)
- `No_of_students`
- Relationships:
- `Section` has `Course` (1 to 1, 0 to N)
- Taken by `Student` (M to N)

4. **Course**
- Attributes:
- `C_ID` (Primary Key)
- `Title`
- Relationships:
- Included in `Section` (0 to N)

#### Relationships

- **Assigned**: One-to-one relationship between `Student` and `Mail_Box`.
- **Take**: Many-to-many relationship between `Student` and `Section` with a grade attribute.
- **Have**: One-to-many relationship between `Section` and `Course`.

### Description of Relationships

- **Student ↔ Mail_Box**: Each student is assigned exactly one mailbox, and each mailbox is assigned to exactly one student.
- **Student ↔ Section**: A student can take multiple sections, and each section can have multiple students. The relationship is further characterized by a `Grade` attribute, indicating the performance or result of the student in that section.
- **Section ↔ Course**: Each section can correspond to one course, but multiple sections can exist for a single course.

This ERD successfully outlines the relationships, constraints, and key attributes required to convert it into a database schema. The primary and foreign keys identified in this diagram ensure the integrity and organization of data within the specified tables.

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