Database of Databases · The Encyclopedia of Database Systems

A curated reference guide for implementations of the world's most important type of software.

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Academic Database Projects Research Systems Built at Universities Embedded Database Systems They Can't Run By Themselves Amazon Database Systems Database Systems Developed by Amazon

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14 Models

Relational 456 Key/Value 243 Document / XML 212 Graph 85 Object-Oriented 62 Vector 41 Column Family / Wide-Column 28 Triplestore / RDF 27 Array / Matrix 21 Network 10 Multi-Value 6 Hierarchical 5 Entity-Relationship 4 Entity-Attribute-Value 2

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Hive

Relational Database System

Apache Hive is a data warehouse software built on top of Hadoop that facilitates reading, writing and managing large datasets residing in distributed storage using SQL. Hive provides the necessary SQ…

Since 2010 AI-Assisted Apache v2

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Azure HorizonDB Relational today 02

NarayanaDB Relational today 03

CSQL Relational today 04

Daffodil DB Relational today 05

nubmq Key/Value today

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SciDB Array / Matrix -20% 02

InterBase Relational -26% 03

BTDB Key/Value · Object-Oriented +3% 04

LMDB Key/Value +19% 05

GenieDB Relational +6129%

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OpenSearch Document / XML 7 02

SparrowDB Graph 6 03

k4 Key/Value 5 04

LMDB Key/Value 5 05

Streambase Relational 5