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Databases

This section covers various database systems, concepts, and best practices for data management.

Relational Databases

  • MySQL - Popular open-source relational database management system

Overview

Databases are organized collections of structured information or data, typically stored electronically in a computer system. They are managed by Database Management Systems (DBMS) that allow users to create, read, update, and delete data efficiently.

Types of Databases

Relational Databases (SQL) - MySQL - PostgreSQL - Oracle - Microsoft SQL Server - SQLite

NoSQL Databases - MongoDB (Document) - Redis (Key-Value) - Cassandra (Column-Family) - Neo4j (Graph)

When to Use Each Type

Use Relational Databases When: - Data has clear relationships and structure - ACID compliance is required - Complex queries and joins are needed - Data integrity is critical

Use NoSQL Databases When: - Handling large volumes of unstructured data - Horizontal scaling is required - Flexible schema is needed - High-speed read/write operations are priority

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