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 — Query Performance

Covers reading EXPLAIN plans, diagnosing slow queries, and choosing the right index.

2 — Database Tuning

Covers connection pooling, buffer pool sizing, caching, statistics, and vacuum/analyze maintenance.

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.