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DBMS > CockroachDB vs. EJDB vs. FatDB vs. SurrealDB

System Properties Comparison CockroachDB vs. EJDB vs. FatDB vs. SurrealDB

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Editorial information provided by DB-Engines
NameCockroachDB  Xexclude from comparisonEJDB  Xexclude from comparisonFatDB  Xexclude from comparisonSurrealDB  Xexclude from comparison
FatDB/FatCloud has ceased operations as a company with February 2014. FatDB is discontinued and excluded from the ranking.
DescriptionCockroachDB is a distributed database architected for modern cloud applications. It is wire compatible with PostgreSQL and backed by a Key-Value Store, which is either RocksDB or a purpose-built derivative, called Pebble.Embeddable document-store database library with JSON representation of queries (in MongoDB style)A .NET NoSQL DBMS that can integrate with and extend SQL Server.A fully ACID transactional, developer-friendly, multi-model DBMS
Primary database modelRelational DBMSDocument storeDocument store
Key-value store
Document store
Graph DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score6.15
Rank#55  Overall
#33  Relational DBMS
Score0.27
Rank#297  Overall
#44  Document stores
Score0.86
Rank#203  Overall
#34  Document stores
#18  Graph DBMS
Websitewww.cockroachlabs.comgithub.com/­Softmotions/­ejdbsurrealdb.com
Technical documentationwww.cockroachlabs.com/­docsgithub.com/­Softmotions/­ejdb/­blob/­master/­README.mdsurrealdb.com/­docs
DeveloperCockroach LabsSoftmotionsFatCloudSurrealDB Ltd
Initial release2015201220122022
Current release23.1.1, May 2023v1.5.0, May 2024
License infoCommercial or Open SourceOpen Source infoApache 2.0, commercial license availableOpen Source infoGPLv2commercialOpen Source
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageGoCC#Rust
Server operating systemsLinux
macOS
Windows
server-lessWindowsLinux
macOS
Windows
Data schemedynamic schemaschema-freeschema-freeschema-free
Typing infopredefined data types such as float or dateyesyes infostring, integer, double, bool, date, object_idyesyes
XML support infoSome form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.no
Secondary indexesyesnoyes
SQL infoSupport of SQLyes, wire compatible with PostgreSQLnono infoVia inetgration in SQL ServerSQL-like query language
APIs and other access methodsJDBCin-process shared library.NET Client API
LINQ
RESTful HTTP API
RPC
Windows WCF Bindings
GraphQL
RESTful HTTP API
WebSocket
Supported programming languagesC#
C++
Clojure
Go
Java
JavaScript (Node.js)
PHP
Python
Ruby
Rust
Actionscript
C
C#
C++
Go
Java
JavaScript (Node.js)
Lua
Objective-C
Pike
Python
Ruby
C#Deno
Go
JavaScript (Node.js)
Rust
Server-side scripts infoStored proceduresnonoyes infovia applications
Triggersnonoyes infovia applications
Partitioning methods infoMethods for storing different data on different nodeshorizontal partitioning (by key range) infoall tables are translated to an ordered KV store and then broken down into 64MB ranges, which are then used as replicas in RAFTnoneSharding
Replication methods infoMethods for redundantly storing data on multiple nodesMulti-source replication using RAFTnoneselectable replication factor
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonoyesno
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual Consistency
Immediate Consistency
Foreign keys infoReferential integrityyesno infotypically not needed, however similar functionality with collection joins possibleno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDnonoACID
Concurrency infoSupport for concurrent manipulation of datayesyes infoRead/Write Lockingyesyes
Durability infoSupport for making data persistentyesyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.no
User concepts infoAccess controlRole-based access controlnono infoCan implement custom security layer via applicationsyes, based on authentication and database rules

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More resources
CockroachDBEJDBFatDBSurrealDB
Recent citations in the news

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