Databases — Useful Sites

PostgreSQLCO.NF

2026-10-18T00:00:00Z

Searchable documentation for every postgresql.conf parameter, with version differences, defaults and community recommendations. Unlike the official manual it adds per-parameter tuning advice and context.

https://postgresqlco.nf/doc/en/param/

Select Star SQL

2026-10-18T00:00:00Z

An interactive online book that teaches SQL through exercises run in the browser against one real dataset. Unlike syntax references it builds query reasoning step by step around a single dataset's story.

https://selectstarsql.com/

Awesome DB Tools

2026-09-18T00:00:00Z

A list of tools that make working with databases easier (clients, migration, schema). Unlike single-database lists it looks at engine-agnostic helper tools.

https://github.com/mgramin/awesome-db-tools

Awesome MongoDB

2026-09-18T00:00:00Z

A list of libraries and tools for MongoDB, the document-based NoSQL database. Unlike general NoSQL lists it focuses on one product’s driver and ODM ecosystem.

https://github.com/ramnes/awesome-mongodb

Awesome Postgres

2026-09-18T00:00:00Z

A list of extensions, tools and resources for PostgreSQL. Unlike the official docs it shows the ecosystem’s extensions and management tools together.

https://github.com/dhamaniasad/awesome-postgres

Beekeeper Studio

2026-09-18T00:00:00Z

An open-source SQL editor and manager supporting many databases. Compared with DBeaver its interface is simpler and more modern, with fewer advanced features in exchange.

https://www.beekeeperstudio.io/

CockroachDB

2026-09-18T00:00:00Z

A distributed SQL database that scales horizontally with strong consistency and survivability, speaking the PostgreSQL protocol. Unlike single-node PostgreSQL it replicates across regions; since 2024 it has no open-source core and is offered free to individuals, students and businesses under $10M annual revenue under an enterprise licence.

https://www.cockroachlabs.com

ConnectionStrings.com

2026-09-18T00:00:00Z

A reference giving the correct connection-string format for every database and driver. Unlike hunting the docs it gathers the syntax of dozens of drivers in one place.

https://www.connectionstrings.com/

dbdiagram.io

2026-09-18T00:00:00Z

A tool that turns a simple text DSL (DBML) into shareable ER diagrams fast. Unlike drag-and-drop diagram tools you type the schema — no aligning boxes by hand — and can export it to SQL.

https://dbdiagram.io

DBeaver

2026-09-18T00:00:00Z

A universal desktop database client managing many databases from one interface. Compared with Beekeeper Studio it is far more comprehensive — ER diagrams, data transfer, hundreds of drivers — but Java-based and heavy.

https://dbeaver.io

MariaDB

2026-09-18T00:00:00Z

A community-driven open-source fork of MySQL, usable as a drop-in replacement.

https://mariadb.org

Modern SQL

2026-09-18T00:00:00Z

Markus Winand’s site teaching modern SQL features such as window functions across dialects. Unlike general SQL tutorials, it tabulates which databases support each feature and since which version.

https://modern-sql.com

Neon

2026-09-18T00:00:00Z

Serverless Postgres with branching and scale-to-zero; it joined Databricks in 2025. Unlike traditional managed Postgres you can branch the database like git — an instant copy for every PR.

https://neon.tech

PlanetScale

2026-09-18T00:00:00Z

Serverless MySQL built on Vitess, managing schema changes through branches with no downtime. Unlike classic managed MySQL it offers that branching and non-blocking migrations; its free tier was removed in 2024.

https://planetscale.com

PostgreSQL Exercises

2026-09-18T00:00:00Z

Practise SQL with graded PostgreSQL exercises in the browser. Compared with SQLBolt it is PostgreSQL-specific and more advanced, including recursive queries and window functions.

https://pgexercises.com

Redis Insight

2026-09-18T00:00:00Z

Redis’s official GUI — browse, edit, query and profile your data. Instead of third-party tools such as RESP.app (RedisDesktopManager), this is now the official option.

https://redis.io/insight/

SQLBolt

2026-09-18T00:00:00Z

Interactive SQL lessons that teach by doing in the browser; each lesson ends with an exercise where you write the query. Unlike video courses you write queries instead of watching; it sits at a more basic level than PostgreSQL tutorials.

https://sqlbolt.com

SurrealDB

2026-09-18T00:00:00Z

A multi-model database combining document, graph and relational in one engine. Instead of running a document store, a graph database and a SQL database separately, you use them all through one query language — at the cost of less maturity than established databases.

https://surrealdb.com

Use The Index, Luke!

2026-09-18T00:00:00Z

Markus Winand’s developer-focused guide to SQL indexing and performance. Unlike general SQL books, it focuses solely on indexing and compares every topic across five major databases.

https://use-the-index-luke.com

Turso

2026-08-21T20:53:20Z

A database platform built on libSQL, a SQLite fork, that replicates the database to edge nodes near the user. Unlike centralised services such as PlanetScale, read latency becomes local file access rather than a network round trip.

https://turso.tech/

Oracle SQL Developer

2026-08-17T20:53:20Z

A free desktop client for Oracle databases combining querying, schema browsing and PL/SQL debugging. Unlike general clients such as DBeaver it has a PL/SQL debugger and Oracle-specific tooling — the usual tool if you work with Oracle.

https://www.oracle.com/database/sqldeveloper/

PocketBase

2026-08-17T20:53:20Z

A backend shipping as one Go file, providing SQLite, auth and a real-time API. Unlike heavy stacks it reduces the server to a single executable.

https://pocketbase.io/

SQLite

2026-08-17T20:53:20Z

A serverless embedded database living in a single file — the most widely deployed database engine in the world. Unlike server databases such as PostgreSQL it needs no separate process or setup; its test coverage is legendary.

https://sqlite.org/

SQLZoo

2026-08-17T20:53:20Z

An exercise set that teaches SQL by making you write queries in the browser, each section over its own dataset. That is the difference from tutorials needing an install: your first `SELECT` requires no database.

https://sqlzoo.net/wiki/SQL_Tutorial

Supabase

2026-08-17T20:53:20Z

An open-source Firebase alternative adding auth, APIs and storage on top of Postgres. Unlike Firebase it stands on relational Postgres and can be self-hosted.

https://supabase.com/

Couchbase Learn

2026-04-20T13:01:24Z

Queries a document store with a SQL-like language (N1QL), which is a gentler break for teams arriving from the relational world than MongoDB’s query syntax.

https://learn.couchbase.com/learn

Firebase

2026-04-20T13:01:23Z

Realtime database, auth, storage and hosting in one package. Unlike Supabase it is NoSQL: it accelerates a prototype sharply, while query flexibility and vendor lock-in become the later problem.

https://firebase.google.com/docs

MongoDB University

2026-04-20T13:01:23Z

MongoDB’s official free courses. Unlike third-party courses it puts weight on data modelling — designing a document store with relational habits is the most common source of performance trouble.

https://learn.mongodb.com/

MySQL Tutorial

2026-04-20T13:01:22Z

Works MySQL end to end over a sample database, treating join types, subqueries and stored procedures separately. Far more readable as an introduction than the official manual.

https://www.mysqltutorial.org/

PostgreSQL Tutorial

2026-04-20T13:01:21Z

A PostgreSQL tutorial showing each topic with a runnable query. Unlike most SQL courses, it goes deep on window functions and CTEs.

https://neon.com/postgresql/tutorial

MongoDB

2026-04-17T18:57:36Z

Document-oriented NoSQL database that stores data in flexible JSON-like (BSON) documents rather than rigid relational tables; built for horizontal scaling and rapid schema iteration.

https://www.mongodb.com/

İlişkisel Veritabanı Tasarımı

2026-04-06T11:29:37Z

A full course on normal forms and schema design. It teaches getting the tables right rather than writing queries — which is where every later problem originates.

https://www.youtube.com/watch?v=26ls5lNiijk

Veritabanları Derinlemesine

2026-04-06T11:29:19Z

A course on internals — index structures, transaction isolation levels, locking. Not a product tutorial; it holds regardless of which database you use.

https://www.youtube.com/watch?v=pPqazMTzNOM

SQL Sıfırdan İleri Seviye

2026-04-06T11:29:04Z

SQL from basics to advanced in four hours for anyone who wants the whole picture in one sitting. It reaches window functions rather than stopping at basic SELECT.

https://www.youtube.com/watch?v=OT1RErkfLNQ