Data Analytics Course Batch109 SQL Training : Session 7 скачать в хорошем качестве

Data Analytics Course Batch109 SQL Training : Session 7

Foreign Keys in SQL | SQL for Data Analytics | Database Relationships Explained In this video, we explain Foreign Keys in SQL, one of the most important concepts for understanding relationships between tables in Data Analytics and database management. Foreign Keys help maintain data integrity and establish relationships between two tables, which is essential when working with real-world business data. 🔹 What you’ll learn in this video: ✔ What is a Foreign Key? ✔ Primary Key vs Foreign Key ✔ How to create Foreign Keys using CREATE & ALTER ✔ Referential Integrity explained ✔ ON DELETE & ON UPDATE actions ✔ Practical examples with relational tables We demonstrate examples using relational databases like: 🗄 MySQL 🗄 PostgreSQL 🗄 Microsoft SQL Server Understanding foreign keys is crucial for: 📊 Data Analytics projects 🏢 Business database management 💻 Backend development 🚀 Data Engineering roles This session is perfect for beginners who want to build strong SQL fundamentals for Data Analytics. 📌 Like, Share & Subscribe for more SQL, Data Analytics & Database tutorials. #SQL #ForeignKey #DataAnalytics #DatabaseDesign #LearnSQL #DataEngineer