> ## Documentation Index
> Fetch the complete documentation index at: https://swe.aboneda.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction to Databases

> Database concepts overview and learning roadmap.

# Databases

Master database fundamentals for building robust applications.

## Topics to Cover

* **SQL Fundamentals** — Joins, subqueries, window functions
* **NoSQL** — Document stores, key-value, column-family, graph
* **Indexing** — B-trees, hash indexes, composite indexes
* **Transactions** — ACID, isolation levels, locking
* **Data Modeling** — Normalization, denormalization, schema design
* **Performance** — Query optimization, connection pooling, caching