Sketch a simple Entity Relational Diagram (ERD) of your table structure, including column names and data types.

To create an Entity-Relationship Diagram (ERD), we need to outline the entities, their attributes (column names), and the relationships between them. Here’s how you can represent it conceptually:

1. Define the Entities and Attributes

• Entity: Student

  • Attributes:
    • StudentID (Integer, Primary Key)
    • FirstName (Varchar)
    • LastName (Varchar)
    • DateOfBirth (Date)
    • Email (Varchar)

• Entity: Course

  • Attributes:
    • CourseID (Integer, Primary Key)
    • CourseName (Varchar)
    • Credits (Integer)

• Entity: Enrollment

  • Attributes:
    • EnrollmentID (Integer, Primary Key)
    • StudentID (Integer, Foreign Key)
    • CourseID (Integer, Foreign Key)
    • EnrollmentDate (Date)

2. Define the Relationships

• Student to Enrollment: One-to-Many (One student can enroll in many courses)
• Course to Enrollment: One-to-Many (One course can have many students enrolled)

3. Simple ERD Sketch (Textual Representation)

+----------------+          +----------------+          +------------------+
|     Student    |          |     Course     |          |    Enrollment     |
+----------------+          +----------------+          +------------------+
| StudentID (PK) |          | CourseID (PK)  |          | EnrollmentID (PK) |
| FirstName      |          | CourseName     |          | StudentID (FK)    |
| LastName       |          | Credits        |          | CourseID (FK)     |
| DateOfBirth    |          +----------------+          | EnrollmentDate     |
| Email          |                                       +------------------+
+----------------+                                           

4. Legend

• PK: Primary Key
• FK: Foreign Key

This textual representation can be used to sketch an ERD on paper or with a diagramming tool. Each entity box contains its attributes, and the relationships can be drawn with lines connecting the entities, indicating the nature of the relationship.