Databases & Query Languages Cheatsheets

A quick reference guide to Cassandra Query Language (CQL), covering essential commands, data types, and functions for efficient database management.

A quick reference guide to MongoDB commands, syntax, and operations for developers and database administrators.

A quick reference guide for commonly used MySQL commands and syntax, covering data definition, data manipulation, user management, and more.

A quick reference guide to CockroachDB's SQL dialect, covering data definition, manipulation, querying, and transaction management. Useful for both beginners and experienced users looking to quickly recall syntax and best practices.

A comprehensive cheat sheet for HBase, covering architecture, data model, key operations, and administration.

A concise guide to using Realm, covering schema definition, CRUD operations, queries, and relationships.

A comprehensive guide to Apache CouchDB, covering basic concepts, querying, administration, and common tasks.

A quick reference for Memcached, covering basic commands, data management, and common use cases. Ideal for developers needing a fast, distributed memory object caching system.

A comprehensive cheat sheet for Elasticsearch, covering essential concepts, query syntax, API endpoints, and common operations.