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DBMS > CockroachDB vs. IRONdb vs. SQream DB vs. VelocityDB

System Properties Comparison CockroachDB vs. IRONdb vs. SQream DB vs. VelocityDB

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Editorial information provided by DB-Engines
NameCockroachDB  Xexclude from comparisonIRONdb  Xexclude from comparisonSQream DB  Xexclude from comparisonVelocityDB  Xexclude from comparison
IRONdb seems to be discontinued. Therefore it is excluded from the DB-Engines 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.A distributed Time Series DBMS with a focus on scalability, fault tolerance and operational simplicitya GPU-based, columnar RDBMS for big data analytics workloadsA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelRelational DBMSTime Series DBMSRelational DBMSGraph DBMS
Object oriented DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score6.15
Rank#55  Overall
#33  Relational DBMS
Score0.70
Rank#227  Overall
#104  Relational DBMS
Score0.05
Rank#358  Overall
#36  Graph DBMS
#16  Object oriented DBMS
Websitewww.cockroachlabs.comwww.circonus.com/solutions/time-series-database/sqream.comvelocitydb.com
Technical documentationwww.cockroachlabs.com/­docsdocs.circonus.com/irondb/category/getting-starteddocs.sqream.comvelocitydb.com/­UserGuide
DeveloperCockroach LabsCirconus LLC.SQream TechnologiesVelocityDB Inc
Initial release2015201720172011
Current release23.1.1, May 2023V0.10.20, January 20182022.1.6, December 20227.x
License infoCommercial or Open SourceOpen Source infoApache 2.0, commercial license availablecommercialcommercialcommercial
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 languageGoC and C++C++, CUDA, Haskell, Java, ScalaC#
Server operating systemsLinux
macOS
Windows
LinuxLinuxAny that supports .NET
Data schemedynamic schemaschema-freeyesyes
Typing infopredefined data types such as float or dateyesyes infotext, numeric, histogramsyes, ANSI Standard SQL Typesyes
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.nonono
Secondary indexesyesnonoyes
SQL infoSupport of SQLyes, wire compatible with PostgreSQLSQL-like query language (Circonus Analytics Query Language: CAQL)yesno
APIs and other access methodsJDBCHTTP API.Net
JDBC
ODBC
.Net
Supported programming languagesC#
C++
Clojure
Go
Java
JavaScript (Node.js)
PHP
Python
Ruby
Rust
.Net
C
C++
Clojure
Erlang
Go
Haskell
Java
JavaScript
JavaScript (Node.js)
Lisp
Lua
Perl
PHP
Python
R
Ruby
Rust
Scala
C++
Java
JavaScript (Node.js)
Python
.Net
Server-side scripts infoStored proceduresnoyes, in Luauser defined functions in Pythonno
TriggersnononoCallbacks are triggered when data changes
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 RAFTAutomatic, metric affinity per nodehorizontal and vertical partitioningSharding
Replication methods infoMethods for redundantly storing data on multiple nodesMulti-source replication using RAFTconfigurable replication factor, datacenter awarenone
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate consistency per node, eventual consistency across nodesImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integrityyesnonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDnoACIDACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
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.nonoyes
User concepts infoAccess controlRole-based access controlnoBased on Windows Authentication

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More resources
CockroachDBIRONdbSQream DBVelocityDB
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