Databases

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Relational (SQL)

• MariaDB (2009) C, C++
• Microsoft SQL Server (1989)
• MySQL (1995) C, C++
• Oracle Database (1979)
• PostgreSQL (1996) C
• RocksDB (library) (2012) C++
• SingleStore (2013)
• Amazon Aurora (2014)

Key-value

• Redis (2009) C
• RocksDB (2012) C++
• etcd
• Infinispan

Document-oriented

• MongoDB (JSON) (2009)

Wide column store

• Apache Cassandra (2008)

Cloud

• AWS RDS
• InfluxDB

TSDB

• TimescaleDB (Nov 2018)
• InfluxDB (2013)
• Prometheus (2012)
• Graphite (2008)
• RRDtool (1999)
• Gorilla

See also

• Databases: Database management, SQL, NoSQL, Wide column, PostgreSQL, MariaDB, MySQL, Derby DB, MongoDB, Cassandra, SQLite, HSQL2, H2, RocksDB, Microsoft SQL Server, DB2, Oracle Database, Memcached, Berkeley DB, Collation, SingleStore, Amazon Aurora, Graph database, Amazon DynamoDB, PrestoDB, Cache hit ratio, ACID, WAL, ARIES, DBMS, OLTP, OLAP, Database Schema, CockroachDB, Tables, Views, Apache Druid, RDMS, TSDB, ScyllaDB, Very large database (VLDB)
• SQL, NewSQL, RDMS: GraphQL (2015), SQLite, select, insert, select count, Distributed SQL, TablePlus, Cache hit ratio, pg_stat_user_tables, EXPLAIN, Index (PostgreSQL), DML, DDL, SQL/MED, Group by, List users, SQL Injection, SQLAlchemy, CREATE USER, CREATE ROLE, EXPLAIN, ALTER DATABASE, REVOKE, NOLOCK, NOWAIT, EXISTS, Unique constraint, .sql, OpenSearch SQL, Transact-SQL