DBDB.io The Encyclopedia of Database Systems · Est. 2017
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Database of Databases

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

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Top 10 Oldest Systems The first database systems in history Apache Foundation Databases Databases controlled by Apache Software Foundation Acquired Database Companies Systems acquired by another company

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14 Models
Relational 477 Key-Value 251 Document / XML 218 Graph 94 Object-Oriented 64 Vector 54 Triplestore / RDF 28 Column Family / Wide-Column 28 Array / Matrix 22 Network 10 Hierarchical 8 Multi-Value 7 Entity-Relationship 4 Entity-Attribute-Value 2

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Solr
Solr

Solr

Document / XML Database System

Solr is an open source NoSQL enterprise search platform built on Apache Lucene. Supporting distributed search and index replication, Solr is highly reliable, scalable and fault tolerant. It runs as a…

Since 2004 AI-Assisted Apache v2
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OlegDB OlegDB Key-Value 3d ago PocketBase PocketBase Relational 6d ago Chroma Chroma Document / XML 9d ago CockroachDB CockroachDB Relational 12d ago PolarDB PolarDB Relational 12d ago

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Oracle Oracle Key-Value · Graph · Triplestore / RDF · Document / XML · Relational -27% Heroic Heroic Key-Value -36% JanusGraph JanusGraph Graph -19% TileDB TileDB Array / Matrix -32% Dolt Dolt Relational -18%

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HydraDB HydraDB Graph 4 AsaDB AsaDB Relational 3 CamusDB CamusDB Key-Value · Relational 3 JabrDB JabrDB 3 MO Model 204 Entity-Attribute-Value 3