Advantages of the Django ORM
The ORM improves productivity with composable queries, model validation, and database abstraction.
- Readable query API
- Built-in escaping reduces SQL injection risk
- Easy relation traversal
Advantages of the Django ORM
Tagged with database
The ORM improves productivity with composable queries, model validation, and database abstraction.
Advantages of the Django ORM
Django transactions group database operations so partial writes do not persist when an error happens mid-flow.
How do transactions work in Django?
Migrations version the schema so database changes stay reproducible across environments.
Why do Django migrations matter?
Joins combine rows from tables based on a related key, with inner and outer joins deciding what unmatched rows survive.
Explain SQL joins
Transactions group multiple statements into one atomic unit so partial updates do not leak through on failure.
What are transactions?
Indexes speed up common queries, but they cost extra storage and slower writes.
Database indexing in system design
Sharding splits data across multiple databases so one machine does not hold or serve everything.
Database sharding basics
A primary handles writes while replicas serve copied data, often improving read scale and availability.
Primary-replica database setup