Learning Management System - nishant24tankariya/Liferay GitHub Wiki

Creating a Learning Management System (LMS) similar to Udemy in Liferay using Objects is an excellent project idea. Here's a detailed breakdown of the Objects, their fields, relationships, and the use cases:

Objects for a Learning Management System (LMS)

1. Courses

  • Fields:

    • Course ID (Auto-generated)
    • Title (Text)
    • Description (Rich Text)
    • Category (Dropdown)
    • Price (Numeric)
    • Difficulty (Dropdown: Beginner/Intermediate/Advanced)
    • Duration (Numeric in Hours)
    • Thumbnail (Image)
    • Rating (Decimal, calculated from feedback)

  • Use Case: Represents the main course entity with essential details like title, category, and price.

2. Students

  • Fields:

    • Student ID (Auto-generated)
    • Name (Text)
    • Email (Email)
    • Enrolled Date (Date)
    • Progress (Percentage)
    • Enrolled Courses (Relationship)

  • Use Case: Stores student information and tracks enrollment in courses.

3. Instructors

  • Fields:

    • Instructor ID (Auto-generated)
    • Name (Text)
    • Email (Email)
    • Expertise (Multi-select Dropdown)
    • Bio (Rich Text)
    • Profile Picture (Image)
    • Courses Taught (Relationship)

  • Use Case: Represents instructors who create and manage courses.

4. Lessons

  • Fields:

    • Lesson ID (Auto-generated)
    • Title (Text)
    • Content Type (Dropdown: Video/Text/Quiz)
    • Video URL (URL)
    • Text Content (Rich Text)
    • Quiz (Relationship to Quiz Object)
    • Course (Relationship to Course Object)

  • Use Case: Breaks down courses into individual lessons for better organization and tracking.

5. Feedback

  • Fields:

    • Feedback ID (Auto-generated)
    • Student (Relationship to Student Object)
    • Course (Relationship to Course Object)
    • Rating (Dropdown: 1 to 5)
    • Review (Rich Text)
    • Date (Date)

  • Use Case: Collects reviews and ratings from students for each course.

6. Categories

  • Fields:

    • Category ID (Auto-generated)
    • Name (Text)
    • Description (Text)

  • Use Case: Organizes courses into categories like “Programming,” “Business,” or “Design.”

7. Quizzes

  • Fields:

    • Quiz ID (Auto-generated)
    • Title (Text)
    • Questions (Relationship to Questions Object)
    • Course (Relationship to Course Object)
    • Passing Score (Numeric)

  • Use Case: Adds assessment components to courses.

8. Questions

  • Fields:

    • Question ID (Auto-generated)
    • Question Text (Text)
    • Options (Rich Text or List)
    • Correct Answer (Text)
    • Quiz (Relationship to Quiz Object)

  • Use Case: Stores individual quiz questions and their correct answers.

9. Enrollment

  • Fields:

    • Enrollment ID (Auto-generated)
    • Student (Relationship to Student Object)
    • Course (Relationship to Course Object)
    • Enrollment Date (Date)
    • Status (Dropdown: In Progress/Completed)

  • Use Case: Tracks which students are enrolled in which courses and their progress status.

10. Transactions

  • Fields:

    • Transaction ID (Auto-generated)
    • Student (Relationship to Student Object)
    • Course (Relationship to Course Object)
    • Amount Paid (Numeric)
    • Date (Date)
    • Payment Status (Dropdown: Paid/Failed)

  • Use Case: Logs payments for courses.

Relationships Between Objects

  1. Courses ↔ Students

    • Many-to-Many (via Enrollment Object).
    • Tracks students enrolled in courses.

  2. Courses ↔ Instructors

    • One-to-Many.
    • Each course is taught by one instructor, but an instructor can teach multiple courses.

  3. Courses ↔ Lessons

    • One-to-Many.
    • Each course contains multiple lessons.

  4. Courses ↔ Feedback

    • One-to-Many.
    • Collects multiple feedback entries for a course.

  5. Courses ↔ Categories

    • Many-to-One.
    • A course belongs to a category.

  6. Lessons ↔ Quizzes

    • One-to-One.
    • Each lesson can include a single quiz.

  7. Quizzes ↔ Questions

    • One-to-Many.
    • A quiz can have multiple questions.

Potential Features and Extensions

  • Gamification: Add badges and leaderboards by creating Objects like Achievements and Points.
  • Certificates: Generate and manage certificates using a Certificates Object with fields for Student, Course, and Completion Date.
  • Notifications: Use Liferay’s notification features to alert students about new courses, lessons, or reminders.

By using these Objects and relationships, you can create a robust and scalable LMS similar to Udemy, tailored to your specific needs.