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System Design Basics for Backend Developers · Lesson

SQL vs. NoSQL Databases

Analyze the strengths and weaknesses of relational (SQL) and non-relational (NoSQL) databases for different use cases.

SQL vs. NoSQL: A Database Showdown

Welcome! In this lesson, we'll dive into the world of databases, specifically comparing two major categories: SQL and NoSQL.

Understanding their differences is crucial for any system designer, as the choice impacts scalability, performance, and data integrity.

Understanding SQL Databases

SQL stands for Structured Query Language. These databases are also known as Relational Databases.

  • They store data in tables with rows and columns.
  • Each table has a predefined schema (structure).
  • Relationships between tables are defined using keys.
  • Examples: MySQL, PostgreSQL, Oracle, SQL Server.

All lessons in this course

  1. SQL vs. NoSQL Databases
  2. Sharding and Data Replication
  3. Data Consistency Models
  4. Indexing and Query Optimization
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