Database Management Systems

A book-shaped table of contents for DBMS: relational foundations through SQL mastery, storage internals, transactions, distributed databases, NoSQL, and MAANG interview prep — cross-linking existing system-design/patterns notes instead of duplicating them.

1 — NoSQL Overview

Covers why NoSQL databases emerged, the major categories, and their tradeoffs against relational systems.

2 — Key-Value Stores

Covers key-value store concepts through Redis and DynamoDB.

3 — Document Databases

Covers document database concepts through MongoDB and Couchbase.

4 — Column Family Databases

Covers wide-column store concepts through Cassandra and Bigtable.