What is Object Relational Mapping (ORM)? : Explained
Your app thinks in objects. Your database thinks in rows. ORM is the translation layer between them — and once you understand it, every framework makes more sense.
In this video:
• Why the object-relational impedance mismatch exists in the first place
• How an ORM translates classes, objects, and methods into tables, rows, and SQL
• Defining models and mapping application objects to database schemas
• How ORMs handle relationships like one-to-many and many-to-many without manual JOINs
• What database migrations are and how they safely evolve your schema over time
• The N+1 query problem, why it happens, and how eager loading fixes it
• When ORMs improve developer productivity — and when raw SQL is the better choice
• Popular ORMs including Hibernate, SQLAlchemy, Django ORM, Prisma, and GORM
No framework magic. No mysterious database queries. Just how ORMs bridge the gap between object-oriented code and relational databases.
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