Databases with Optimistic Concurrency Control (OCC) Concur...


	BigchainDB Abandoned Blockchain	2015	Document / XML, Key-Value	Two-Phase Locking (Deadlock Prevention), Optimistic Concurrency Control (OCC)	Abandoned Blockchain
	Bitsy	2013	Graph	Optimistic Concurrency Control (OCC)
	Blazegraph Acquired Company Abandoned	2006	Graph, Triplestore / RDF	Optimistic Concurrency Control (OCC)	Acquired Company Abandoned
	Blueflood Time-Series Abandoned	2013	Column Family / Wide-Column	Two-Phase Locking (Deadlock Prevention), Optimistic Concurrency Control (OCC)	Time-Series Abandoned
	Cassandra NoSQL AI-Assisted	2008	Key-Value, Column Family / Wide-Column	Two-Phase Locking (Deadlock Prevention), Optimistic Concurrency Control (OCC)	NoSQL AI-Assisted
CL	CloudSearch Search Engine	2012	Document / XML	Optimistic Concurrency Control (OCC)	Search Engine
	Compass Abandoned Search Engine	2006	Document / XML, Object-Oriented	Optimistic Concurrency Control (OCC)	Abandoned Search Engine
	Cosmos DB	2015	Key-Value, Graph, Column Family / Wide-Column	Optimistic Concurrency Control (OCC)
	Couchbase NoSQL	2010	Key-Value, Document / XML	Optimistic Concurrency Control (OCC)	NoSQL
	CrateDB	2014	—	Optimistic Concurrency Control (OCC)
	Db2	1983	Document / XML, Relational	Two-Phase Locking (Deadlock Prevention), Optimistic Concurrency Control (OCC)
	DBx1000 Abandoned	2014	Relational	Multi-version Concurrency Control (MVCC), Two-Phase Locking (Deadlock Prevention), Optimistic Concurrency Control (OCC), Timestamp Ordering, Two-Phase Locking (Deadlock Detection)	Abandoned
	Delta Lake AI-Assisted	2019	Column Family / Wide-Column	Multi-version Concurrency Control (MVCC), Optimistic Concurrency Control (OCC)	AI-Assisted
	Drill OLAP AI-Assisted	2012	Column Family / Wide-Column	Optimistic Concurrency Control (OCC)	OLAP AI-Assisted
	DynamoDB OLTP NoSQL	2012	Document / XML, Key-Value	Optimistic Concurrency Control (OCC)	OLTP NoSQL
	EsgynDB Failed Company	2015	Relational	Optimistic Concurrency Control (OCC)	Failed Company
	EventSourcingDB Time-Series Immutable	2022	Document / XML	Optimistic Concurrency Control (OCC)	Time-Series Immutable
	eXtremeDB Cache Time-Series OLTP Middleware	2001	Key-Value, Entity-Relationship, Relational, Column Family / Wide-Column	Deterministic Concurrency Control, Multi-version Concurrency Control (MVCC), Optimistic Concurrency Control (OCC)	Cache Time-Series OLTP Middleware
	FileMaker Acquired Company	1985	Relational	Optimistic Concurrency Control (OCC)	Acquired Company
	FoundationDB Acquired Company OLTP AI-Assisted	2009	Key-Value	Multi-version Concurrency Control (MVCC), Optimistic Concurrency Control (OCC)	Acquired Company OLTP AI-Assisted
	GUN Peer-to-Peer	2014	Graph	Optimistic Concurrency Control (OCC)	Peer-to-Peer
	Hekaton OLTP	2012	Relational	Multi-version Concurrency Control (MVCC), Optimistic Concurrency Control (OCC)	OLTP
	HyperDex Abandoned NoSQL	2011	Key-Value	Timestamp Ordering, Optimistic Concurrency Control (OCC)	Abandoned NoSQL
	InfinityDB	2002	Key-Value, Graph, Array / Matrix, Hierarchical, Relational	Optimistic Concurrency Control (OCC)
	JaguarDB Nearest Neighbor	2017	Array / Matrix, Key-Value	Optimistic Concurrency Control (OCC)	Nearest Neighbor
	KairosDB Time-Series	2013	Relational	Two-Phase Locking (Deadlock Prevention), Optimistic Concurrency Control (OCC)	Time-Series
	Mimer SQL	1974	Relational	Optimistic Concurrency Control (OCC)
	MonetDB OLAP MMAP	2002	Column Family / Wide-Column	Optimistic Concurrency Control (OCC)	OLAP MMAP
	MongoDB NoSQL AI-Assisted	2009	Document / XML	Optimistic Concurrency Control (OCC), Two-Phase Locking (Deadlock Prevention)	NoSQL AI-Assisted
	NoisePage	2018	Relational	Multi-version Concurrency Control (MVCC), Optimistic Concurrency Control (OCC)
	QLDB Abandoned Blockchain	2018	Document / XML	Optimistic Concurrency Control (OCC)	Abandoned Blockchain
	RavenDB MMAP NoSQL AI-Assisted	2009	Document / XML, Key-Value	Optimistic Concurrency Control (OCC)	MMAP NoSQL AI-Assisted
	RocksDB Forked Code OLTP	2012	Key-Value	Optimistic Concurrency Control (OCC)	Forked Code OLTP
SB	sboxdb	2024	Relational	Multi-version Concurrency Control (MVCC), Optimistic Concurrency Control (OCC)
SI	Silo Abandoned	2013	Relational	Optimistic Concurrency Control (OCC)	Abandoned
	Solr Search Engine NoSQL AI-Assisted	2004	Document / XML	Optimistic Concurrency Control (OCC)	Search Engine NoSQL AI-Assisted
	Sophia Abandoned OLTP NoSQL	2014	Key-Value	Multi-version Concurrency Control (MVCC), Optimistic Concurrency Control (OCC)	Abandoned OLTP NoSQL
	Speedb Forked Code Acquired Company	2020	Key-Value	Optimistic Concurrency Control (OCC)	Forked Code Acquired Company
	Splunk Acquired Company Search Engine	2002	Key-Value	Optimistic Concurrency Control (OCC)	Acquired Company Search Engine
	Tarantool	2008	Key-Value	Optimistic Concurrency Control (OCC)
	TerarkDB Forked Code Acquired Company	2016	Key-Value	Optimistic Concurrency Control (OCC)	Forked Code Acquired Company
	TerminusDB AI-Assisted	2019	Document / XML, Graph, Triplestore / RDF	Optimistic Concurrency Control (OCC)	AI-Assisted
	TokuMX Forked Code Acquired Company Abandoned	2013	Document / XML	Two-Phase Locking (Deadlock Prevention), Optimistic Concurrency Control (OCC)	Forked Code Acquired Company Abandoned
	Typhon MMAP AI-Assisted	2015	Object-Oriented	Multi-version Concurrency Control (MVCC), Optimistic Concurrency Control (OCC)	MMAP AI-Assisted
VA	Valthree Cache NoSQL	2025	Key-Value	Optimistic Concurrency Control (OCC)	Cache NoSQL
	Vector OLAP Acquired Company	2009	Relational	Multi-version Concurrency Control (MVCC), Optimistic Concurrency Control (OCC)	OLAP Acquired Company
	XAP NoSQL	2000	Document / XML	Optimistic Concurrency Control (OCC), Two-Phase Locking (Deadlock Detection)	NoSQL
	YottaDB NoSQL	2001	Key-Value	Optimistic Concurrency Control (OCC)	NoSQL
	YugabyteDB Forked Code OLTP AI-Assisted	2016	Key-Value, Relational	Multi-version Concurrency Control (MVCC), Optimistic Concurrency Control (OCC)	Forked Code OLTP AI-Assisted