Here are complete OOP solutions for the exercises related to Data Engineering ✅ 1. DataSource (Inheritance) ✅ 2. DataTransformer ✅ 3. DataWriter ✅ 4. ETL Pipeline Example usage: ✅ 5. Schema Validator ✅ 6. Singleton Logger ✅ 7. Abstract Base Classes ✅ 8. Transformer Pipeline (Multiple Transformers) ✅ 9. SCD Type 2 Processor (Simplified) ✅ 10. Kafka Consumer (OOP) 🔥 Final Real Framework Example Usage: متابعة قراءة complete OOP solutions for Data Engineering Exercices