473 Systems Found

Databases with Relational Data Model

473 results

Remove Remove

Save Search


	1010data OLAP	2000	Relational	OLAP
	4D	1984	Relational
AB	abhot Time-Series Forked Code Abandoned	2017	Relational	Time-Series Forked Code Abandoned
	Access	1992	Relational
	ActorDB Abandoned	2014	Relational	Abandoned
	Adaptive Server Enterprise Acquired Company	1987	Relational	Acquired Company
	Advantage Database Server xBase Acquired Company	1993	Relational	xBase Acquired Company
	AgensGraph Forked Code Multi-Model Acquired Company	2013	Document / XML, Graph, Key-Value, Relational	Forked Code Multi-Model Acquired Company
	AionDB Multi-Model	2026	Vector, Graph, Relational	Multi-Model
	Aito Search Engine	2017	Relational	Search Engine
	AKDB Abandoned	2009	Relational	Abandoned
	Akumuli Time-Series Abandoned	2013	Relational	Time-Series Abandoned
	AlaSQL AI-Assisted	2014	Document / XML, Relational	AI-Assisted
AL	AlchemyDB Acquired Company Abandoned	2010	Relational	Acquired Company Abandoned
	Alenka Abandoned	2012	Relational	Abandoned
	AllocDB	2026	Relational
	AlloyDB OLAP Forked Code OLTP	2022	Relational	OLAP Forked Code OLTP
	Altibase OLTP	1999	Relational	OLTP
	Amelie OLTP	2023	Relational	OLTP
	AntDB Forked Code	—	Relational	Forked Code
	Approach Acquired Company Abandoned	1991	Relational	Acquired Company Abandoned
	ArcadeDB Forked Code AI-Assisted	2021	Document / XML, Graph, Key-Value, Relational	Forked Code AI-Assisted
	ArcticDB Time-Series OLAP AI-Assisted	2018	Relational	Time-Series OLAP AI-Assisted
	AresDB OLAP Abandoned	2018	Relational	OLAP Abandoned
	AriaSQL Abandoned	2024	Relational	Abandoned
	Ark	2026	Relational
	Arroyo Acquired Company Streaming	2023	Relational	Acquired Company Streaming
	Aster Data OLAP Acquired Company	2005	Relational	OLAP Acquired Company
	Atoti OLAP	2005	Relational	OLAP
	Aurora	2014	Relational
	Aurora DSQL Serverless OLTP	2023	Relational	Serverless OLTP
	Axion Abandoned	2002	Relational	Abandoned
	Azure HorizonDB Forked Code	2026	Relational	Forked Code
	Azure SQL Database Hosting Service	2009	Relational	Hosting Service
	BaikalDB	2018	Relational
	BASIS	—	Relational
	Beagle SQL Abandoned	1996	Relational	Abandoned
	Bedrock Blockchain OLTP AI-Assisted	2016	Relational	Blockchain OLTP AI-Assisted
	BemiDB	2024	Relational
	BigQuery OLAP Serverless	2010	Document / XML, Relational	OLAP Serverless
	BitYota Acquired Company	2011	Relational	Acquired Company
	BlackRay Failed Company	2005	Relational	Failed Company
	BlazingSQL OLAP Abandoned Failed Company	2015	Relational	OLAP Abandoned Failed Company
	BlinkDB Abandoned	2012	Relational	Abandoned
	BlobCity Failed Company	2015	Document / XML, Relational	Failed Company
BR	BroDB Parody / Joke Abandoned	2024	Relational	Parody / Joke Abandoned
	Brytlyt OLAP Forked Code Acquired Company	2013	Relational	OLAP Forked Code Acquired Company
	BTrDB Abandoned	2014	Relational	Abandoned
BU	Bunny Database Serverless	2023	Relational	Serverless
	BusTub	2019	Relational
	ByConity OLAP Abandoned	2020	Relational	OLAP Abandoned
CA	Calvin Abandoned	2012	Relational	Abandoned
	CedarDB OLAP Forked Code OLTP	2023	Relational, Array / Matrix	OLAP Forked Code OLTP
	chDB OLAP Acquired Company AI-Assisted	2023	Relational	OLAP Acquired Company AI-Assisted
	Cheetah xBase	2005	Relational	xBase
	CheetahDB	2018	Relational
	Citus OLAP Acquired Company AI-Assisted	2010	Relational	OLAP Acquired Company AI-Assisted
	ClearDB Acquired Company	2010	Relational	Acquired Company
	ClickHouse OLAP AI-Assisted	2016	Relational	OLAP AI-Assisted
	Cloudberry OLAP Forked Code Revival Project	2023	Relational	OLAP Forked Code Revival Project
	Cloud SQL Hosting Service	2012	Relational	Hosting Service
	Clustrix NewSQL Acquired Company OLTP	2006	Relational	NewSQL Acquired Company OLTP
	CnosDB Time-Series	2021	Relational	Time-Series
	CockroachDB NewSQL OLTP AI-Assisted	2014	Relational	NewSQL OLTP AI-Assisted
	CoGaDB Abandoned	2012	Relational	Abandoned
	Column Abandoned	2021	Relational	Abandoned
	Comdb2 AI-Assisted	2004	Relational	AI-Assisted
	CompleteDB Abandoned OLTP	2012	Relational	Abandoned OLTP
	ComputeDB OLAP Acquired Company Abandoned	2015	Relational	OLAP Acquired Company Abandoned
	Consus	2004	Relational
	CornerStone Acquired Company	1985	Relational	Acquired Company
	CovenantSQL Abandoned Blockchain	2018	Relational	Abandoned Blockchain
	CozoDB Abandoned	2022	Relational	Abandoned
CQ	CQL++ Failed Company	1994	Relational	Failed Company
	Crescando Abandoned	2009	Relational	Abandoned
	CrossDB Abandoned	2019	Relational	Abandoned
	CrowdDB	2011	Relational
	CSQL Abandoned Failed Company	2005	Relational	Abandoned Failed Company
	C-Store Abandoned	2005	Relational	Abandoned
	CSV Comp DB	2007	Relational
	cubeSQL Acquired Company	2003	Relational	Acquired Company
	Cubrid AI-Assisted	2008	Relational	AI-Assisted
	D3 Acquired Company	1999	Relational	Acquired Company
	Daffodil DB Abandoned OLTP	2003	Relational	Abandoned OLTP
	DaggerDB	2014	Relational
	Databend AI-Assisted	2020	Relational	AI-Assisted
DA	DataBlitz OLTP	1993	Relational	OLTP
	DataEase Acquired Company OLTP	1981	Relational	Acquired Company OLTP
	DataFusion Query Engine AI-Assisted	2016	Relational	Query Engine AI-Assisted
	DATAllegro OLAP Acquired Company	2003	Relational	OLAP Acquired Company
	Datascope	1996	Relational
	Dataupia Failed Company	2005	Relational	Failed Company
	Db2	1983	Document / XML, Relational
	DB9 Serverless OLTP	2026	Relational	Serverless OLTP
	dBASE xBase	1979	Relational	xBase
	DBMaker	1994	Relational
	DBx1000 Abandoned	2014	Relational	Abandoned
	DeepDB Abandoned Failed Company	2010	Relational	Abandoned Failed Company
	Derby Acquired Company Abandoned OLTP	1997	Relational	Acquired Company Abandoned OLTP
	DeveelDB Abandoned OLTP	2009	Relational	Abandoned OLTP
	DeviceSQL Streaming	1998	Relational	Streaming
DI	DIRECT OLTP	1978	Relational	OLTP
DI	discodb Parody / Joke	2026	Relational	Parody / Joke
	DittoBitto	2001	Relational
	DolphinDB Time-Series	2018	Relational	Time-Series
	Dolt Versioning AI-Assisted	2018	Relational	Versioning AI-Assisted
	Doris OLAP AI-Assisted	2017	Relational	OLAP AI-Assisted
DQ	Dqlite	2017	Relational
	Dremio OLAP Query Engine Acquired Company Data Lake	2015	Relational	OLAP Query Engine Acquired Company Data Lake
DR	DriftDB Immutable AI-Assisted	2025	Relational	Immutable AI-Assisted
	Drizzle Forked Code Abandoned	2008	Relational	Forked Code Abandoned
	DuckDB OLAP AI-Assisted	2018	Relational	OLAP AI-Assisted
	EdgelessDB Abandoned	2021	Relational	Abandoned
	EffiProz Abandoned	—	Relational	Abandoned
	ElaSQL Abandoned	2016	Relational	Abandoned
	ElevateDB	2006	Relational
EM	EmbedDB Time-Series	2023	Relational	Time-Series
	Empress	1979	Relational
EN	Encompass	1981	Relational
	Endatabas OLAP Abandoned OLTP Immutable	2023	Document / XML, Relational	OLAP Abandoned OLTP Immutable
	EsgynDB Failed Company	2015	Relational	Failed Company
	Essentia Failed Company	—	Object-Oriented, Relational	Failed Company
	EVA DB Abandoned	2018	Relational	Abandoned
	EventQL OLAP Abandoned	2014	Relational	OLAP Abandoned
EV	EvolvSQL OLTP	2026	Relational	OLTP
	Exasol OLAP	2000	Relational	OLAP
	eXtremeDB Cache Time-Series OLTP Middleware	2001	Key-Value, Entity-Relationship, Relational, Column Family / Wide-Column	Cache Time-Series OLTP Middleware
	FastDB MMAP	2011	Relational	MMAP
	FaunaDB Serverless Failed Company	2012	Document / XML, Graph, Key-Value, Relational	Serverless Failed Company
	FBase Time-Series Abandoned	2022	Relational	Time-Series Abandoned
	FeatureBase Abandoned Search Engine	2017	Relational	Abandoned Search Engine
FE	Ferrite OLTP	2024	Relational	OLTP
FI	FileDb Abandoned NoSQL	2011	Relational	Abandoned NoSQL
	FileMaker Acquired Company	1985	Relational	Acquired Company
	Firebird AI-Assisted	2000	Relational	AI-Assisted
	Firebolt OLAP Forked Code	2020	Relational	OLAP Forked Code
	FirstSQL/J Failed Company	2001	Relational	Failed Company
	Floe OLAP Forked Code Data Lake	2025	Relational	OLAP Forked Code Data Lake
	Fluree Blockchain AI-Assisted	2017	Document / XML, Graph, Triplestore / RDF, Relational	Blockchain AI-Assisted
	FoxPro xBase Acquired Company	1984	Relational	xBase Acquired Company
	Frigatebird OLAP	2025	Relational	OLAP
	FrontBase OLTP	1993	Relational	OLTP
GA	Gadfly Abandoned	1994	Relational	Abandoned
GA	Gamma OLAP Abandoned OLTP	1986	Relational	OLAP Abandoned OLTP
	GaussDB	2011	Relational
	Gel OLAP AI-Assisted	2018	Relational	OLAP AI-Assisted
	GenieDB Failed Company Hosting Service	2008	Relational	Failed Company Hosting Service
	GeoSpock DB Failed Company	2013	Relational	Failed Company
	GigaBASE	—	Relational
	GlareDB Abandoned Middleware AI-Assisted	2022	Relational	Abandoned Middleware AI-Assisted
	Glowdust Abandoned	2023	Relational	Abandoned
	Gnocchi Time-Series Middleware	2014	Relational	Time-Series Middleware
GN	GNU SQL Server	1997	Relational
	Goldilocks	2010	Relational
GO	Google F1	2013	Relational
GR	GRACE Abandoned	1981	Relational	Abandoned
	GreatSQL	2020	Relational
	Greenplum OLAP Forked Code Acquired Company	2003	Relational	OLAP Forked Code Acquired Company
	GreptimeDB Time-Series AI-Assisted	2022	Relational	Time-Series AI-Assisted
	H2	2004	Relational
	Hadapt OLAP Acquired Company Middleware	2009	Relational	OLAP Acquired Company Middleware
	HAWQ OLAP Abandoned Middleware	2015	Relational	OLAP Abandoned Middleware
	HeavyDB Abandoned	2013	Relational	Abandoned
	Hekaton OLTP	2012	Relational	OLTP
	HerdDB	2016	Relational
	HexaDB	2023	Relational
	HiRDB	1994	Document / XML, Relational
	Hive OLAP AI-Assisted	2010	Relational	OLAP AI-Assisted
	HoraeDB Time-Series Abandoned	2021	Relational	Time-Series Abandoned
	hss.db	2009	Relational
	H-Store NewSQL Abandoned OLTP	2006	Relational	NewSQL Abandoned OLTP
	HStreamDB Abandoned Streaming	2020	Relational	Abandoned Streaming
	Hydra OLAP Abandoned Failed Company	2022	Relational	OLAP Abandoned Failed Company
	HyPer OLAP Acquired Company OLTP	2010	Relational	OLAP Acquired Company OLTP
	HyperSQL	2001	Relational
	Hyrise OLAP	2009	Relational	OLAP
	Icecoal Abandoned	2020	Relational	Abandoned
	Illustra Acquired Company OLTP	1992	Relational	Acquired Company OLTP
	Impala OLAP AI-Assisted	2013	Relational	OLAP AI-Assisted
	InfiniDB OLAP Abandoned Failed Company	2000	Relational	OLAP Abandoned Failed Company
	InfiniSQL Abandoned OLTP	2013	Relational	Abandoned OLTP
	Infinity Nearest Neighbor	2022	Relational	Nearest Neighbor
	InfinityDB	2002	Key-Value, Graph, Array / Matrix, Hierarchical, Relational
	Infino Query Engine Nearest Neighbor MMAP	—	Relational	Query Engine Nearest Neighbor MMAP
	Infobright OLAP Acquired Company	2005	Relational	OLAP Acquired Company
	InfoFrame Abandoned	2013	Relational	Abandoned
	Informix Acquired Company	1980	Relational	Acquired Company
	Ingres Acquired Company	1974	Relational	Acquired Company
	InMemory.Net	2014	Relational
	Instant Serverless NoSQL Hosting Service	2022	Relational	Serverless NoSQL Hosting Service
	InstantDB Failed Company	1997	Relational	Failed Company
	InterBase Versioning Acquired Company	1984	Relational	Versioning Acquired Company
	IQ Acquired Company	1992	Relational	Acquired Company
	ITTIA DB Time-Series OLTP	2000	Relational	Time-Series OLTP
	Jazz AI-Assisted	2026	Relational	AI-Assisted
	Joedb	2014	Relational
	JoinBase Time-Series Abandoned	—	Relational	Time-Series Abandoned
	JuliaDB Abandoned	2017	Relational	Abandoned
	Just Logic/SQL OLTP	1994	Relational	OLTP
	JustOneDB Acquired Company	2010	Relational	Acquired Company
	KairosDB Time-Series	2013	Relational	Time-Series
	KantoDB OLTP	2025	Relational	OLTP
	Kappa Abandoned	1989	Relational	Abandoned
KA	KarelDB Abandoned	2019	Relational	Abandoned
	Kdb+ Acquired Company	1998	Relational	Acquired Company
KE	KekeDB	—	Relational
	Kinetica OLAP	2009	Relational	OLAP
	Kronicler Time-Series	2025	Relational	Time-Series
	ksqlDB Streaming AI-Assisted	2017	Key-Value, Relational	Streaming AI-Assisted
	Kubl Acquired Company	1994	Relational	Acquired Company
	Kudu OLTP	2016	Relational	OLTP
	Kunlun Abandoned	2019	Relational	Abandoned
	Kyuubi Middleware AI-Assisted	2017	Relational	Middleware AI-Assisted
	lakeql Query Engine AI-Assisted	2026	Relational	Query Engine AI-Assisted
	Lealone	2012	Relational
	LeanXcale OLAP OLTP	2010	Relational	OLAP OLTP
	LEAP	1997	Relational
	libSQL Forked Code OLTP	2022	Relational	Forked Code OLTP
	LingoDB OLAP AI-Assisted	2021	Relational	OLAP AI-Assisted
	Linter	1990	Relational
LI	LittleD Abandoned	2014	Relational	Abandoned
LL	LlamaDB Abandoned	2015	Relational	Abandoned
	LocalSQL	2001	Relational
	LocustDB Abandoned	2017	Relational	Abandoned
	Lovefield Web Browser Abandoned	2014	Relational	Web Browser Abandoned
	LucidDB OLAP Abandoned	2004	Relational	OLAP Abandoned
	M3DB Time-Series AI-Assisted	2018	Relational	Time-Series AI-Assisted
	Machbase Time-Series	2017	Relational	Time-Series
	madIS Abandoned	2009	Relational	Abandoned
	MammothDB OLAP Acquired Company	2012	Relational	OLAP Acquired Company
	Manticore Search Search Engine	2017	Relational	Search Engine
	MariaDB AI-Assisted	2009	Relational	AI-Assisted
	Mariposa	1994	Relational
	Materialize Streaming AI-Assisted	2019	Relational	Streaming AI-Assisted
	MatrixOne OLAP OLTP Streaming AI-Assisted	2021	Relational	OLAP OLTP Streaming AI-Assisted
	MaxDB OLTP	1977	Relational	OLTP
	Mckoi SQL Database Abandoned Failed Company	1998	Relational	Abandoned Failed Company
MD	MDBMS	1998	Relational
	MemCP OLAP AI-Assisted	2022	Relational	OLAP AI-Assisted
	Mentat Abandoned	2016	Relational	Abandoned
	MetalBase Abandoned	—	Relational	Abandoned
	Mimer SQL	1974	Relational
	Mimir Time-Series AI-Assisted	2016	Relational	Time-Series AI-Assisted
MK	mkdb Abandoned	2023	Relational	Abandoned
	Mnesia	—	Relational
	mnestic Forked Code Revival Project AI-Assisted	2026	Relational	Forked Code Revival Project AI-Assisted
	Mondrian OLAP Acquired Company	2002	Relational	OLAP Acquired Company
	MonographDB	2021	Relational
	MotherDuck Hosting Service	2022	Relational	Hosting Service
	mSQL	1994	Relational
MU	MUFFIN	1979	Relational
	Multigres Middleware AI-Assisted	2025	Relational	Middleware AI-Assisted
	MyScaleDB OLAP Forked Code Abandoned Failed Company AI-Assisted	2021	Relational	OLAP Forked Code Abandoned Failed Company AI-Assisted
	MySQL Acquired Company	1994	Relational	Acquired Company
	Napa	2018	Relational
	NarayanaDB OLAP AI-Assisted	2025	Relational	OLAP AI-Assisted
	NavDB Abandoned	2017	Key-Value, Relational	Abandoned
	Neon Serverless Forked Code Acquired Company OLTP	2021	Relational	Serverless Forked Code Acquired Company OLTP
NE	Neoview Abandoned	2007	Relational	Abandoned
	Netezza OLAP Acquired Company	1999	Relational	OLAP Acquired Company
	Netlify Database Serverless Hosting Service	2024	Relational	Serverless Hosting Service
	NexusDB OLTP	2003	Relational	OLTP
	Nile OLTP	2022	Relational	OLTP
	Ninja Database	—	Object-Oriented, Relational
	NodeDB Multi-Model Nearest Neighbor AI-Assisted	2026	Vector, Graph, Array / Matrix, Document / XML, Relational	Multi-Model Nearest Neighbor AI-Assisted
	NoisePage	2018	Relational
	NonStop SQL Acquired Company OLTP	1987	Relational	Acquired Company OLTP
	NuoDB NewSQL Acquired Company	2010	Relational	NewSQL Acquired Company
	ObsessionDB OLAP Hosting Service	2024	Relational	OLAP Hosting Service
	OceanBase	2010	Relational
	Ocelot Failed Company	2001	Relational	Failed Company
	Ocient	2016	Relational
	OctoSQL Query Engine Abandoned	2019	Relational	Query Engine Abandoned
	OneDB	2020	Relational
	OpenBase SQL Failed Company	1991	Relational	Failed Company
	OpenEdge OLTP	1984	Relational	OLTP
	openGemini Time-Series AI-Assisted	2022	Relational	Time-Series AI-Assisted
OP	open-gpdb OLAP Forked Code	2024	Relational	OLAP Forked Code
	OpenMLDB	2017	Relational
	Opteryx OLAP Serverless AI-Assisted	2021	Relational	OLAP Serverless AI-Assisted
	Oracle Multi-Model	1977	Document / XML, Graph, Key-Value, Relational, Triplestore / RDF	Multi-Model
	OrigoDB Abandoned	2011	Key-Value, Graph, Object-Oriented, Document / XML, Relational	Abandoned
	OrioleDB Acquired Company AI-Assisted	2021	Relational	Acquired Company AI-Assisted
	OushuDB	2016	Relational
	OxidSQL Abandoned	2022	Relational	Abandoned
	Oxla OLAP Acquired Company	2020	Relational	OLAP Acquired Company
	ParAccel OLAP Acquired Company	2006	Relational	OLAP Acquired Company
	ParadeDB OLAP Nearest Neighbor Search Engine AI-Assisted	2023	Relational	OLAP Nearest Neighbor Search Engine AI-Assisted
	Paradox Acquired Company Abandoned	1985	Relational	Acquired Company Abandoned
	ParStream OLAP Acquired Company Abandoned	2010	Relational	OLAP Acquired Company Abandoned
	Percona Server Forked Code	2006	Relational	Forked Code
	Pervasive PSQL Acquired Company	1996	Key-Value, Relational	Acquired Company
PE	Peterlee Relational Test Vehicle	1970	Relational
	Phoenix Middleware AI-Assisted	2014	Relational	Middleware AI-Assisted
PI	PI Time-Series Acquired Company	1980	Hierarchical, Relational	Time-Series Acquired Company
	picoSQL Abandoned	1995	Relational	Abandoned
	PieCloudDB OLAP	2021	Relational	OLAP
	Pinot OLAP AI-Assisted	2014	Relational	OLAP AI-Assisted
	PinusDB Abandoned	2019	Relational	Abandoned
	PipelineDB Acquired Company Abandoned Streaming	2013	Relational	Acquired Company Abandoned Streaming
	PlanetScale Forked Code OLTP	2018	Relational	Forked Code OLTP
	PocketBase	2022	Relational
	pocketSQL Abandoned	2001	Relational	Abandoned
	PointBase Acquired Company	1998	Relational	Acquired Company
	PolarDB	2017	Relational
	Polyhedra Acquired Company	1994	Relational	Acquired Company
	Polypheny Multi-Model	2017	Document / XML, Graph, Relational	Multi-Model
	PosDB OLAP	2017	Relational	OLAP
	PostgreSQL OLTP	1986	Relational	OLTP
PR	PranaDB Abandoned	2022	Relational	Abandoned
	Predator	1996	Relational
	PrestoDB OLAP AI-Assisted	2013	Document / XML, Key-Value, Column Family / Wide-Column, Relational	OLAP AI-Assisted
	PrimeBase OLTP	1990	Relational	OLTP
PR	PRISMA	1986	Relational
	Proteus	2015	Relational
	Proton Streaming AI-Assisted	2021	Relational	Streaming AI-Assisted
	ProtonBase OLAP	2021	Document / XML, Relational	OLAP
	P*TIME Acquired Company OLTP	2000	Relational	Acquired Company OLTP
	PuffinDB Serverless Abandoned	2023	Relational	Serverless Abandoned
	qikkDB OLAP Abandoned Failed Company	2019	Relational	OLAP Abandoned Failed Company
	ql AI-Assisted	2013	Relational	AI-Assisted
	Qserv AI-Assisted	2011	Relational	AI-Assisted
	Quadcap Embeddable Database Failed Company	1999	Relational	Failed Company
	QuestDB Time-Series AI-Assisted	2014	Relational	Time-Series AI-Assisted
QU	Quickbase Abandoned	1993	Relational	Abandoned
	Quickstep OLAP Abandoned	2013	Relational	OLAP Abandoned
	Quokka OLAP Abandoned	2021	Relational	OLAP Abandoned
	RadonDB Abandoned Failed Company	2018	Relational	Abandoned Failed Company
	RaimaDB Time-Series	1984	Network, Relational	Time-Series
	RainStor Acquired Company	2004	Relational	Acquired Company
	RamSQL Abandoned	2014	Relational	Abandoned
	RaptorDB Forked Code	2024	Relational	Forked Code
	RayforceDB OLAP AI-Assisted	2023	Relational	OLAP AI-Assisted
	R:BASE Acquired Company	1981	Relational	Acquired Company
	/rdb Abandoned	1984	Relational	Abandoned
RD	RDBMS	1974	Relational
	Rdb/VMS Acquired Company	1984	Relational	Acquired Company
	ReadySet Cache Middleware AI-Assisted	2020	Relational	Cache Middleware AI-Assisted
	Reality Acquired Company	1973	Multi-Value, Relational	Acquired Company
	Red Brick OLAP Acquired Company	1990	Relational	OLAP Acquired Company
	RedDatabase Forked Code	2006	Relational	Forked Code
	RediSQL Abandoned	2016	Relational	Abandoned
	RedoxQL	2024	Relational
	Redshift OLAP Serverless	2012	Relational	OLAP Serverless
	Regatta OLAP OLTP	2020	Relational	OLAP OLTP
	ReifyDB OLTP	2025	Relational	OLTP
	Rel	2004	Relational
	RelationalAI	2018	Graph, Relational
	RelationalCloud Abandoned	2010	Relational	Abandoned
	RexDB Acquired Company	2006	Relational	Acquired Company
	RhizomeDB Abandoned Peer-to-Peer	2022	Relational	Abandoned Peer-to-Peer
	RisingLight	2021	Relational
	RisingWave Streaming AI-Assisted	2021	Relational	Streaming AI-Assisted
	Rockset OLAP Acquired Company	2016	Relational	OLAP Acquired Company
	RonDB OLTP AI-Assisted	2020	Key-Value, Relational	OLTP AI-Assisted
	Rosebase Failed Company	1992	Relational	Failed Company
	rqlite AI-Assisted	2014	Relational	AI-Assisted
	Sadas Engine OLAP	—	Relational	OLAP
SB	sboxdb	2024	Relational
	ScalarDB Middleware NoSQL	2018	Relational	Middleware NoSQL
	SchoonerSQL Acquired Company OLTP	2007	Relational	Acquired Company OLTP
	ScimoreDB	2005	Relational
	ScopeDB	2024	Relational
	Scuba	2013	Relational
SD	SDB	—	Document / XML, Relational
	Seafowl OLAP Acquired Company Abandoned	2022	Relational	OLAP Acquired Company Abandoned
	SeekDB AI-Assisted	2025	Relational, Vector	AI-Assisted
	SenseiDB Abandoned	2012	Relational	Abandoned
	SereneDB OLAP OLTP Search Engine AI-Assisted	2024	Relational	OLAP OLTP Search Engine AI-Assisted
	ShannonBase	2024	Relational, Vector
	ShardingSphere AI-Assisted	2016	Relational	AI-Assisted
	ShareBase Acquired Company	1979	Relational	Acquired Company
SH	SharedDB	2012	Relational
	shsql	2002	Relational
SI	Silo Abandoned	2013	Relational	Abandoned
	SingleStore OLAP NewSQL Acquired Company OLTP	2011	Document / XML, Key-Value, Multi-Value, Object-Oriented, Relational, Vector	OLAP NewSQL Acquired Company OLTP
	Siodb Abandoned	2018	Relational	Abandoned
	Sirius OLAP Query Engine AI-Assisted	2024	Relational	OLAP Query Engine AI-Assisted
	SKDB OLTP AI-Assisted	2022	Relational	OLTP AI-Assisted
	SKSQL Abandoned	2021	Relational	Abandoned
	Skyrise OLAP Serverless Query Engine Abandoned	2019	Relational	OLAP Serverless Query Engine Abandoned
	SlothDB	2026	Relational
	SmallSQL Abandoned	2005	Relational	Abandoned
	Snowflake OLAP	2013	Document / XML, Relational	OLAP
	SochDB AI-Assisted	2026	Graph, Relational, Vector	AI-Assisted
	solidDB Acquired Company OLTP	1992	Relational	Acquired Company OLTP
SO	Sonnerie Time-Series	—	Relational	Time-Series
	SpaceTime	2020	Relational
	SpacetimeDB OLTP AI-Assisted	2023	Relational	OLTP AI-Assisted
	Speedy Abandoned	—	Relational	Abandoned
	Splice Machine Abandoned Failed Company	2012	Relational	Abandoned Failed Company
	SQL Anywhere Acquired Company	1992	Relational	Acquired Company
	SQLBase Acquired Company	1984	Relational	Acquired Company
SQ	SQL/DS	1981	Relational
	SQLflex	—	Relational
	SQLite OLTP	2000	Relational	OLTP
	SQLite.Cloud OLTP Hosting Service	2020	Relational	OLTP Hosting Service
	SQL Server	1988	Relational
	SQream OLAP	2010	Relational	OLAP
SQ	Squirreling Query Engine Web Browser AI-Assisted	2025	Relational	Query Engine Web Browser AI-Assisted
	StarRocks OLAP AI-Assisted	2021	Relational, Column Family / Wide-Column	OLAP AI-Assisted
	StellarSQL Abandoned	2018	Relational	Abandoned
	StereoDB Abandoned OLTP	2023	Relational	Abandoned OLTP
	StoneDB OLAP Failed Company	2022	Relational	OLAP Failed Company
	Stoolap OLAP OLTP	2025	Relational	OLAP OLTP
	StormDB Acquired Company	2012	Relational	Acquired Company
	Streambase Acquired Company Streaming	2003	Relational	Acquired Company Streaming
	Strozzi NoSQL	1989	Relational
	Superbase	1983	Relational
	Supra Server SQL Acquired Company OLTP	1989	Relational	Acquired Company OLTP
	SurrealDB Serverless Multi-Model AI-Assisted	2016	Document / XML, Graph, Relational	Serverless Multi-Model AI-Assisted
	Swarm64 OLAP Acquired Company	2013	Relational	OLAP Acquired Company
	SwellDB	2025	Relational
	SynapCores Multi-Model Nearest Neighbor	2026	Graph, Relational, Vector	Multi-Model Nearest Neighbor
SY	System R OLTP	1972	Relational	OLTP
	TabDB Parody / Joke Abandoned	2019	Relational	Parody / Joke Abandoned
	Tajo OLAP Abandoned	2012	Relational	OLAP Abandoned
	Tdbengine	1985	Relational
	TDengine Time-Series AI-Assisted	2017	Relational	Time-Series AI-Assisted
	TDSQL	2012	Key-Value, Document / XML, Relational
	TensorBase OLAP Abandoned Failed Company	2020	Relational	OLAP Abandoned Failed Company
	Teradata	1979	Document / XML, Graph, Relational
	Tesora Acquired Company Middleware	2010	Relational	Acquired Company Middleware
	Theseus OLAP Failed Company	2022	Relational	OLAP Failed Company
	ThinkSQL Abandoned	2000	Relational	Abandoned
	Tibero OLTP	2003	Relational	OLTP
	TigerBeetle	2020	Relational
	Timbala Time-Series Abandoned	2016	Relational	Time-Series Abandoned
	TimescaleDB Time-Series AI-Assisted	2017	Relational	Time-Series AI-Assisted
	TimesTen Acquired Company OLTP	1996	Relational	Acquired Company OLTP
	Timestream	2018	Relational
	TinyBase	2021	Relational
	TinyDB Query Engine Peer-to-Peer	1999	Relational	Query Engine Peer-to-Peer
TI	tinySQL xBase Abandoned	2003	Relational	xBase Abandoned
	TokuDB Acquired Company Abandoned	2009	Relational	Acquired Company Abandoned
	toyDB	2019	Relational
	TrailDB Abandoned	2014	Relational	Abandoned
	Transbase OLTP	1987	Relational	OLTP
	TransLattice NewSQL Failed Company	2007	Relational	NewSQL Failed Company
	Truviso Acquired Company Streaming	2006	Relational	Acquired Company Streaming
	ts-sql Abandoned	2020	Relational	Abandoned
	Turso OLTP AI-Assisted	2023	Relational	OLTP AI-Assisted
TY	Typhoon Abandoned	1996	Relational	Abandoned
	Ultralite	1999	Relational
	Umbra OLAP OLTP	2018	Array / Matrix, Relational	OLAP OLTP
	UniSQL Acquired Company	1991	Relational	Acquired Company
	Valentina Database OLTP	1998	Relational	OLTP
	Vector OLAP Acquired Company	2009	Relational	OLAP Acquired Company
	VectorSQL OLAP Abandoned	2020	Relational	OLAP Abandoned
	Velox OLAP Query Engine AI-Assisted	2020	Relational	OLAP Query Engine AI-Assisted
	VennDB	2023	Relational
	Vertica OLAP Forked Code Acquired Company	2005	Relational	OLAP Forked Code Acquired Company
	VillageSQL Forked Code OLTP Revival Project AI-Assisted	2025	Relational	Forked Code OLTP Revival Project AI-Assisted
	Virtuoso	1998	Relational
	Visual FoxPro xBase	1992	Relational	xBase
	Vitess Middleware AI-Assisted	2011	Relational	Middleware AI-Assisted
	Vitesse DB OLAP	2014	Relational	OLAP
	ViyaDB OLAP Abandoned	2017	Relational	OLAP Abandoned
	VoltDB NewSQL	2009	Relational	NewSQL
VS	vsql Abandoned	2021	Relational	Abandoned
	WarehousePG Forked Code AI-Assisted	2025	Relational	Forked Code AI-Assisted
	WebScaleSQL Forked Code Abandoned	2014	Relational	Forked Code Abandoned
	WonderDB Abandoned OLTP	2013	Relational	Abandoned OLTP
	Xata Forked Code AI-Assisted	2020	Relational	Forked Code AI-Assisted
XD	XDB Enterprise Server Acquired Company	1998	Relational	Acquired Company
	Xeround Failed Company Hosting Service	2005	Relational	Failed Company Hosting Service
	XtremeData OLAP	2003	Relational	OLAP
	Yaacomo OLAP Failed Company	2008	Relational	OLAP Failed Company
	YARD-SQL Failed Company	1996	Relational	Failed Company
	YDB NewSQL OLTP AI-Assisted	2014	Relational	NewSQL OLTP AI-Assisted
	Yellowbrick OLAP	2014	Relational	OLAP
	YugabyteDB Forked Code OLTP AI-Assisted	2016	Key-Value, Relational	Forked Code OLTP AI-Assisted
	zeeSQL Cache OLTP	2021	Relational	Cache OLTP