What's ORM?

 Object-Relational Mapping (ORM) is a programming technique that enables developers to interact with a relational database using objects, rather than writing raw SQL code.

Brief definition👇

ORM is a bridge between the object-oriented programming world and the relational database world. It allows developers to:

1. Represent database tables as classes

2. Map database columns to object properties

3. Perform CRUD (Create, Read, Update, Delete) operations using objects

Key Benefits🌞

1. Simplifies database interactions

2. Reduces SQL boilerplate code

3. Improves code readability and maintainability

4. Enhances portability across databases

5. Supports lazy loading and caching

How ORM Works😏

1. Configuration: Define mapping between classes and database tables

2. Object Creation: Create objects that represent database data

3. Persistence: Save objects to the database

4. Retrieval: Query database using objects

5. Update: Modify objects and save changes to the database

Popular ORM Tools😊

1. Hibernate (Java)

2. Entity Framework (C#/.NET)

3. Django ORM (Python)

4. SQLAlchemy (Python)

5. Laravel Eloquent (PHP)

6. TypeORM (TypeScript/JavaScript)

7. Doctrine (PHP)

ORM Concepts👍

1. Entity: Represents a database table

2. Attribute: Represents a database column

3. Relationship: Defines connections between entities

4. Query: Retrieves data from the database

5. Transaction: Manages database operations

Advantages🚴

1. Improved productivity

2. Reduced SQL errors

3. Better data abstraction

4. Enhanced scalability

5. Simplified database migration

Disadvantages😪

1. Performance overhead

2. Steep learning curve

3. Over-engineering

4. Limited control over SQL

5. Potential for ORM-specific issues

Best Practices🏂

1. Use lazy loading

2. Optimize queries

3. Use caching

4. Avoid over-engineering

5. Monitor performance

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