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DBMS > Cassandra vs. Datomic vs. EXASOL vs. Riak KV vs. Snowflake

System Properties Comparison Cassandra vs. Datomic vs. EXASOL vs. Riak KV vs. Snowflake

Editorial information provided by DB-Engines
NameCassandra  Xexclude from comparisonDatomic  Xexclude from comparisonEXASOL  Xexclude from comparisonRiak KV  Xexclude from comparisonSnowflake  Xexclude from comparison
DescriptionWide-column store based on ideas of BigTable and DynamoDB infoOptimized for write accessDatomic builds on immutable values, supports point-in-time queries and uses 3rd party systems for durabilityHigh-performance, in-memory, MPP database specifically designed for in-memory analytics.Distributed, fault tolerant key-value storeCloud-based data warehousing service for structured and semi-structured data
Primary database modelWide column storeRelational DBMSRelational DBMSKey-value store infowith links between data sets and object tags for the creation of secondary indexesRelational DBMS
Secondary database modelsVector DBMS infostarting with release V5
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score98.83
Rank#12  Overall
#1  Wide column stores
Score1.66
Rank#144  Overall
#66  Relational DBMS
Score1.76
Rank#139  Overall
#62  Relational DBMS
Score4.01
Rank#79  Overall
#9  Key-value stores
Score130.36
Rank#8  Overall
#5  Relational DBMS
Websitecassandra.apache.orgwww.datomic.comwww.exasol.comwww.snowflake.com
Technical documentationcassandra.apache.org/­doc/­latestdocs.datomic.comwww.exasol.com/­resourceswww.tiot.jp/­riak-docs/­riak/­kv/­latestdocs.snowflake.net/­manuals/­index.html
DeveloperApache Software Foundation infoApache top level project, originally developped by FacebookCognitectExasolOpenSource, formerly Basho TechnologiesSnowflake Computing Inc.
Initial release20082012200020092014
Current release4.1.3, July 20231.0.6735, June 20233.2.0, December 2022
License infoCommercial or Open SourceOpen Source infoApache version 2commercial infolimited edition freecommercialOpen Source infoApache version 2, commercial enterprise editioncommercial
Cloud-based only infoOnly available as a cloud servicenonononoyes
DBaaS offerings (sponsored links) infoDatabase as a Service

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Astra DB: Multi-cloud DBaaS built on Apache Cassandra.
Implementation languageJavaJava, ClojureErlang
Server operating systemsBSD
Linux
OS X
Windows
All OS with a Java VMLinux
OS X
hosted
Data schemeschema-freeyesyesschema-freeyes infosupport of semi-structured data formats (JSON, XML, Avro)
Typing infopredefined data types such as float or dateyesyesyesnoyes
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.nonononoyes
Secondary indexesrestricted infoonly equality queries, not always the best performing solutionyesyesrestricted
SQL infoSupport of SQLSQL-like SELECT, DML and DDL statements (CQL)noyesnoyes
APIs and other access methodsProprietary protocol infoCQL (Cassandra Query Language, an SQL-like language)
Thrift
RESTful HTTP API.Net
JDBC
ODBC
WebSocket
HTTP API
Native Erlang Interface
CLI Client
JDBC
ODBC
Supported programming languagesC#
C++
Clojure
Erlang
Go
Haskell
Java
JavaScript infoNode.js
Perl
PHP
Python
Ruby
Scala
Clojure
Java
Java
Lua
Python
R
C infounofficial client library
C#
C++ infounofficial client library
Clojure infounofficial client library
Dart infounofficial client library
Erlang
Go infounofficial client library
Groovy infounofficial client library
Haskell infounofficial client library
Java
JavaScript infounofficial client library
Lisp infounofficial client library
Perl infounofficial client library
PHP
Python
Ruby
Scala infounofficial client library
Smalltalk infounofficial client library
JavaScript (Node.js)
Python
Server-side scripts infoStored proceduresnoyes infoTransaction Functionsuser defined functionsErlanguser defined functions
TriggersyesBy using transaction functionsyesyes infopre-commit hooks and post-commit hooksno infosimilar concept for controling cloud resources
Partitioning methods infoMethods for storing different data on different nodesSharding infono "single point of failure"none infoBut extensive use of caching in the application peersShardingSharding infono "single point of failure"yes
Replication methods infoMethods for redundantly storing data on multiple nodesselectable replication factor infoRepresentation of geographical distribution of servers is possiblenone infoBut extensive use of caching in the application peersselectable replication factoryes
MapReduce infoOffers an API for user-defined Map/Reduce methodsyesnoyes infoHadoop integrationyesno
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency
Immediate Consistency infocan be individually decided for each write operation
Immediate ConsistencyImmediate ConsistencyEventual ConsistencyImmediate Consistency
Foreign keys infoReferential integritynonoyesno infolinks between data sets can be storedyes
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datano infoAtomicity and isolation are supported for single operationsACIDACIDnoACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyesyes
Durability infoSupport for making data persistentyesyes infousing external storage systems (e.g. Cassandra, DynamoDB, PostgreSQL, Couchbase and others)yesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyes inforecommended only for testing and developmentyesno
User concepts infoAccess controlAccess rights for users can be defined per objectnoAccess rights for users, groups and roles according to SQL-standardyes, using Riak SecurityUsers with fine-grained authorization concept, user roles and pluggable authentication
More information provided by the system vendor
CassandraDatomicEXASOLRiak KVSnowflake
Specific characteristicsApache Cassandra is the leading NoSQL, distributed database management system, well...
» more
Competitive advantagesNo single point of failure ensures 100% availability . Operational simplicity for...
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Typical application scenariosInternet of Things (IOT), fraud detection applications, recommendation engines, product...
» more
Key customersApple, Netflix, Uber, ING,, Intuit,Fidelity, NY Times, Outbrain, BazaarVoice, Best...
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Market metricsCassandra is used by 40% of the Fortune 100.
» more
Licensing and pricing modelsApache license  Pricing for commercial distributions provided by DataStax and available...
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