Databases with Hybrid Storage Architecture


	Aerospike NoSQL AI-Assisted	2009	Document / XML, Key-Value, Vector	Hybrid	NoSQL AI-Assisted
	Altibase OLTP	1999	Relational	Hybrid, In-Memory	OLTP
	ArcadeDB Forked Code AI-Assisted	2021	Document / XML, Graph, Key-Value, Relational	Hybrid	Forked Code AI-Assisted
	AresDB OLAP Abandoned	2018	Relational	Hybrid	OLAP Abandoned
	Azure SQL Database Hosting Service	2009	Relational	Disk-oriented, In-Memory	Hosting Service
BB	bbolt Forked Code Revival Project	2017	Key-Value	Hybrid	Forked Code Revival Project
	Blazegraph Acquired Company Abandoned	2006	Graph, Triplestore / RDF	Hybrid	Acquired Company Abandoned
	BlinkDB Abandoned	2012	Relational	Hybrid	Abandoned
	BoltDB Abandoned	2013	Key-Value	Hybrid	Abandoned
	Brytlyt OLAP Forked Code Acquired Company	2013	Relational	Hybrid	OLAP Forked Code Acquired Company
	chDB OLAP Acquired Company AI-Assisted	2023	Relational	Disk-oriented	OLAP Acquired Company AI-Assisted
	ClickHouse OLAP AI-Assisted	2016	Relational	Disk-oriented, Hybrid, In-Memory	OLAP AI-Assisted
	Clustrix NewSQL Acquired Company OLTP	2006	Relational	Hybrid	NewSQL Acquired Company OLTP
	Cosmos DB	2015	Key-Value, Graph, Column Family / Wide-Column	Hybrid
	Datomic Acquired Company	2012	Key-Value	Hybrid	Acquired Company
	Derby Acquired Company Abandoned OLTP	1997	Relational	Hybrid	Acquired Company Abandoned OLTP
	DGraph Acquired Company AI-Assisted	2015	Graph	Hybrid	Acquired Company AI-Assisted
	Drill OLAP AI-Assisted	2012	Column Family / Wide-Column	Hybrid	OLAP AI-Assisted
	Druid OLAP AI-Assisted	2011	Column Family / Wide-Column	Hybrid	OLAP AI-Assisted
	DuckDB OLAP AI-Assisted	2018	Relational	Hybrid	OLAP AI-Assisted
	DynamoDB OLTP NoSQL	2012	Document / XML, Key-Value	Hybrid	OLTP NoSQL
	ElevateDB	2006	Relational	Hybrid
	Elliptics Abandoned	2009	Key-Value	Hybrid	Abandoned
	eXtremeDB Cache Time-Series OLTP Middleware	2001	Key-Value, Entity-Relationship, Relational, Column Family / Wide-Column	Hybrid, Disk-oriented, In-Memory	Cache Time-Series OLTP Middleware
	FeatureBase Abandoned Search Engine	2017	Relational	Hybrid	Abandoned Search Engine
	Fluree Blockchain AI-Assisted	2017	Document / XML, Graph, Triplestore / RDF, Relational	Hybrid	Blockchain AI-Assisted
	FoundationDB Acquired Company OLTP AI-Assisted	2009	Key-Value	Hybrid	Acquired Company OLTP AI-Assisted
	GridDB	2011	Key-Value	Hybrid
	H2	2004	Relational	Hybrid
HA	HaloDB Revive Forked Code Revival Project	2017	Key-Value	Hybrid	Forked Code Revival Project
	HeavyDB Abandoned	2013	Relational	Hybrid	Abandoned
	Hive OLAP AI-Assisted	2010	Relational	Hybrid, Disk-oriented, In-Memory	OLAP AI-Assisted
	InfinityDB	2002	Key-Value, Graph, Array / Matrix, Hierarchical, Relational	Hybrid
	Kdb+ Acquired Company	1998	Relational	Hybrid	Acquired Company
	LedisDB Abandoned NoSQL	2014	Key-Value	Hybrid, Disk-oriented, In-Memory	Abandoned NoSQL
	Materialize Streaming AI-Assisted	2019	Relational	Hybrid	Streaming AI-Assisted
	Memgraph AI-Assisted	2016	Graph	Hybrid, In-Memory	AI-Assisted
	MobyDB	2026	Key-Value	Disk-oriented
	MongoDB NoSQL AI-Assisted	2009	Document / XML	Hybrid	NoSQL AI-Assisted
	MotherDuck Hosting Service	2022	Relational	Hybrid	Hosting Service
	NavDB Abandoned	2017	Key-Value, Relational	Disk-oriented, Hybrid, In-Memory	Abandoned
	NuoDB NewSQL Acquired Company	2010	Relational	Hybrid	NewSQL Acquired Company
	NutsDB AI-Assisted	2018	Key-Value	Hybrid	AI-Assisted
	ObjectBox Time-Series Nearest Neighbor MMAP Mobile NoSQL	2016	Object-Oriented	Hybrid	Time-Series Nearest Neighbor MMAP Mobile NoSQL
	ObsessionDB OLAP Hosting Service	2024	Relational	Disk-oriented, In-Memory, Hybrid	OLAP Hosting Service
	OnceDB Cache Abandoned Failed Company	2016	Document / XML	Hybrid	Cache Abandoned Failed Company
	OrientDB Multi-Model Acquired Company NoSQL	2010	Document / XML, Graph, Key-Value, Object-Oriented	Hybrid	Multi-Model Acquired Company NoSQL
	Quickstep OLAP Abandoned	2013	Relational	Hybrid	OLAP Abandoned
	RaimaDB Time-Series	1984	Network, Relational	Disk-oriented, Hybrid, In-Memory	Time-Series
	Redis Cache OLTP AI-Assisted	2009	Key-Value	Hybrid	Cache OLTP AI-Assisted
	RelationalCloud Abandoned	2010	Relational	Hybrid	Abandoned
	RocksDB Forked Code OLTP	2012	Key-Value	Hybrid, Disk-oriented, In-Memory	Forked Code OLTP
	RonDB OLTP AI-Assisted	2020	Key-Value, Relational	Hybrid	OLTP AI-Assisted
	rqlite AI-Assisted	2014	Relational	Hybrid	AI-Assisted
	Satori Nearest Neighbor	2025	Vector	Hybrid	Nearest Neighbor
	Scylla NoSQL AI-Assisted	2014	Key-Value, Column Family / Wide-Column	Hybrid	NoSQL AI-Assisted
	SingleStore OLAP NewSQL Acquired Company OLTP	2011	Document / XML, Key-Value, Multi-Value, Object-Oriented, Relational, Vector	Disk-oriented, Hybrid, In-Memory	OLAP NewSQL Acquired Company OLTP
	solidDB Acquired Company OLTP	1992	Relational	Disk-oriented, Hybrid, In-Memory	Acquired Company OLTP
	Sophia Abandoned OLTP NoSQL	2014	Key-Value	Hybrid	Abandoned OLTP NoSQL
	Spark SQL OLAP AI-Assisted	2014	—	Hybrid	OLAP AI-Assisted
	Speedb Forked Code Acquired Company	2020	Key-Value	Disk-oriented, In-Memory, Hybrid	Forked Code Acquired Company
	SQL Server	1988	Relational	Hybrid
	Sqrrl Acquired Company NoSQL	2012	Graph, Key-Value	Hybrid	Acquired Company NoSQL
	StarRocks OLAP AI-Assisted	2021	Relational, Column Family / Wide-Column	Hybrid, Disk-oriented	OLAP AI-Assisted
	SurrealDB Serverless Multi-Model AI-Assisted	2016	Document / XML, Graph, Relational	Hybrid	Serverless Multi-Model AI-Assisted
	TDengine Time-Series AI-Assisted	2017	Relational	Hybrid	Time-Series AI-Assisted
TE	Tera Abandoned	2014	Column Family / Wide-Column	Hybrid	Abandoned
	TerarkDB Forked Code Acquired Company	2016	Key-Value	Disk-oriented, In-Memory, Hybrid	Forked Code Acquired Company
	TieredMemDB Cache Forked Code Abandoned NoSQL	2020	Key-Value	In-Memory	Cache Forked Code Abandoned NoSQL
VA	Valthree Cache NoSQL	2025	Key-Value	Hybrid	Cache NoSQL
	Vector OLAP Acquired Company	2009	Relational	Hybrid	OLAP Acquired Company
	WiredTiger Acquired Company AI-Assisted	2008	Key-Value	Hybrid	Acquired Company AI-Assisted
	Yellowbrick OLAP	2014	Relational	Hybrid	OLAP
	YTsaurus AI-Assisted	2010	Key-Value	Hybrid	AI-Assisted
	zeeSQL Cache OLTP	2021	Relational	Hybrid, In-Memory	Cache OLTP
	Zu Cache	2025	Key-Value	Hybrid	Cache