@MappedSuperclass – Detailed Description:
@MappedSuperclass is a JPA annotation used to define a base class that is not directly mapped to its own database table. Instead, its fields and mappings are inherited by entity subclasses that are mapped to tables.

It’s commonly used to share common fields like IDs, audit columns (createdDate, updatedBy), or business logic across multiple entities without duplicating code.

The main idea is to provide a reusable superclass with common persistent properties, so all child entities automatically include those fields in their own tables.

1. ✔️ Avoids Code Duplication

   • Common fields and mappings are defined once in the base class and automatically inherited by all child entities.

2. ✔️ Centralized Maintenance

   • Updates to shared fields or logic need to be made in only one place.

3. ✔️ Flexible Data Modeling

   • Supports clean, consistent, and reusable designs across multiple entities.

4. ✔️ Improves Readability and Organization

   • Keeps entity classes simpler by separating shared concerns into a base class.

5. ✔️ Promotes DRY (Don’t Repeat Yourself) Principle

   • Reduces repeated code in multiple entity classes.

6. ✔️ Easier to Enforce Standards

   • Ensures consistent column mappings for audit fields or IDs across the data model.

7. ✔️ Integrates Seamlessly with JPA/Hibernate

   • Child entities automatically include base class fields in their own tables without needing extra configuration.