ORM

What Is Entity Framework Core?

An introduction to Entity Framework Core, Microsoft's cross-platform ORM for .NET, and why teams use it instead of raw ADO.NET.

Django Interview Questions

A focused review of the Django concepts interviewers ask about most — the ORM, the request/response cycle, middleware, and REST API design.

Django ORM QuerySets

How QuerySets let you retrieve, filter, and chain database queries lazily using Python instead of raw SQL.

What is the N+1 Query Problem and How Do You Fix It?

The N+1 query problem is a performance anti-pattern where code runs one query to fetch a list of N parent records, then runs one additional query per parent to…

ORM Lazy Loading vs Eager Loading: What is the Difference?

Lazy loading fetches an object's related data only at the moment it is actually accessed in code, issuing a separate query on demand, while eager loading fetch…

Stored Procedures vs ORM: What Are the Trade-offs?

Stored procedures push logic and multi-statement operations into the database itself for performance and centralized control, while an ORM keeps logic in appli…

What is the Single Table Inheritance Pattern?

Single Table Inheritance is a pattern for mapping an object-oriented class hierarchy to a relational database by storing every class in the hierarchy — the bas…

What is the Active Record Pattern?

Active Record is a design pattern where an object wraps a row of a database table (or view), encapsulating both the data and the persistence logic (save, delet…