Every serious developer must understand how data is stored, structured, and scaled. This book gives you the power to design and manage both relational and NoSQL databases; used by startups and enterprise systems alike. Inside, you’ll learn:

• SQL Fundamentals: tables, relationships, normalization, constraints, and joins

• Advanced SQL: stored procedures, indexing, transactions, and optimization

• MongoDB Essentials: documents, collections, schema design, CRUD operations

• Aggregation & Querying: pipelines, filters, projections, and operators

• Relationships in MongoDB: embedding vs referencing

• Performance Tuning: indexes, query optimization, sharding, and replication

• Data Modeling Principles: when to use SQL vs NoSQL

• Practical Projects: building a REST API connected to both SQL and MongoDB

By the end, you’ll be able to design and manage any database architecture - structured or flexible, and integrate them seamlessly with real-world applications.