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.

2 — Encryption

Covers encryption at rest, encryption in transit, and transparent data encryption (TDE).

3 — SQL Injection

Covers SQL injection prevention through prepared statements and safe ORM usage.

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 — Why Databases Exist

Traces the shift from file-based storage to DBMS, the problems that shift solved, and introduces OLTP vs OLAP and the CAP perspective.