Databases in Full Stack .NET

 🗂️ Databases in Full Stack .NET

In full stack .NET development, the database is a crucial part of the backend, responsible for storing, retrieving, and managing data that the application uses.


.NET supports several types of databases and provides powerful tools to interact with them.


🔷 Common Databases Used in .NET

1. Relational Databases

These are the most commonly used databases in .NET projects.


✅ Popular Choices:

SQL Server (Microsoft’s flagship database)


PostgreSQL


MySQL


SQLite (for lightweight/local development)


2. NoSQL Databases

Used when flexibility or scalability is more important than strict schema design.


✅ Popular Choices:

MongoDB


Cosmos DB (Microsoft's NoSQL solution)


Redis (often used for caching)


🔧 How .NET Connects to Databases

.NET applications use data access technologies to communicate with databases.


🔹 1. ADO.NET

Low-level data access


Gives full control over SQL queries and connections


Mostly used for performance-critical or legacy applications


🔹 2. Entity Framework (EF) Core

Most popular modern ORM (Object-Relational Mapper) in .NET


Maps .NET classes to database tables


Supports migrations, LINQ queries, change tracking


Example of a simple EF Core model:


csharp

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public class Product

{

    public int Id { get; set; }

    public string Name { get; set; }

    public decimal Price { get; set; }

}

🔹 3. Dapper

Lightweight and faster than EF Core


Micro-ORM used when performance and simplicity are key


You write SQL manually, but mapping is easier than raw ADO.NET


🧱 Common Architecture in Full Stack .NET

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Frontend (React / Angular / Blazor)

   ↓

Backend (.NET Web API)

   ↓

Database (SQL Server, PostgreSQL, etc.)

.NET typically uses ASP.NET Core Web API as the backend, which:


Exposes RESTful endpoints


Handles business logic


Communicates with the database using EF Core or Dapper


🚀 Key Concepts for Database Work in .NET

Concept Description

Migrations Automatically update database schema via code

DbContext EF Core’s way of managing database access

LINQ Query data in a type-safe way

Connection Strings Define how .NET connects to your database

Seeding Data Pre-populating a database with initial values


✅ Best Practices

Use EF Core for rapid development, but switch to Dapper or raw SQL when performance is critical.


Store connection strings securely, e.g., in appsettings.json or environment variables.


Keep your data access layer separate from business logic for clean architecture.


Use migrations to manage schema changes in a version-controlled way.


📌 Example Tech Stack

Layer Technology

Frontend React or Blazor

Backend ASP.NET Core Web API

ORM Entity Framework Core

Database SQL Server or PostgreSQL

Learn Full Stack Dot NET Training in Hyderabad

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