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DBMS > Realm vs. RocksDB vs. SingleStore vs. Splunk

System Properties Comparison Realm vs. RocksDB vs. SingleStore vs. Splunk

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Editorial information provided by DB-Engines
NameRealm  Xexclude from comparisonRocksDB  Xexclude from comparisonSingleStore infoformer name was MemSQL  Xexclude from comparisonSplunk  Xexclude from comparison
DescriptionA DBMS built for use on mobile devices that’s a fast, easy to use alternative to SQLite and Core DataEmbeddable persistent key-value store optimized for fast storage (flash and RAM)MySQL wire-compliant distributed RDBMS that combines an in-memory row-oriented and a disc-based column-oriented storageAnalytics Platform for Big Data
Primary database modelDocument storeKey-value storeRelational DBMSSearch engine
Secondary database modelsDocument store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score9.38
Rank#43  Overall
#8  Document stores
Score3.43
Rank#92  Overall
#17  Key-value stores
Score5.51
Rank#65  Overall
#37  Relational DBMS
Score87.66
Rank#13  Overall
#2  Search engines
Websiterealm.iorocksdb.orgwww.singlestore.comwww.splunk.com
Technical documentationrealm.io/­docsgithub.com/­facebook/­rocksdb/­wikidocs.singlestore.comdocs.splunk.com/­Documentation/­Splunk
DeveloperRealm, acquired by MongoDB in May 2019Facebook, Inc.SingleStore Inc.Splunk Inc.
Initial release2014201320132003
Current release6.14.6 , December 20207.1.11, October 2020
License infoCommercial or Open SourceOpen SourceOpen Source infoBSDcommercial infofree developer edition availablecommercial infoLimited free edition and free developer edition available
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.
SingleStore Managed Service: The world's fastest, most capable cloud database for operational analytics, machine learning, & AI. Available instantly with multi-cloud and hybrid-cloud capabilities.
Implementation languageC++C++
Server operating systemsAndroid
Backend: server-less
iOS
Windows
Linux info64 bit version requiredLinux
OS X
Solaris
Windows
Data schemeyesschema-freeyesyes
Typing infopredefined data types such as float or dateyesnoyesyes
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.nononoyes
Secondary indexesyesnoyesyes
SQL infoSupport of SQLnonoyes, but no triggers and foreign keysno infoSplunk Search Processing Language for search commands
APIs and other access methodsC++ API
Java API
JDBC
ODBC
HTTP REST
Supported programming languages.Net
Java infowith Android only
Objective-C
React Native
Swift
C++
Java
Bash
C
C#
Java
JavaScript (Node.js)
Python
C#
Java
JavaScript
PHP
Python
Ruby
Server-side scripts infoStored proceduresno inforuns within the applications so server-side scripts are unnecessarynoyesyes
Triggersyes infoChange Listenersnonoyes
Partitioning methods infoMethods for storing different data on different nodesnonenoneShardingSharding
Replication methods infoMethods for redundantly storing data on multiple nodesnonenoneSource-replica replicationMulti-source replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononoyes
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate Consistency only within each nodeEventual Consistency
Foreign keys infoReferential integritynononono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDyesACID infoOnly isolation level: READ COMMITEDno infoA 'Transaction' in Splunk has a different meaning: grouping related events into a single one for later searching
Concurrency infoSupport for concurrent manipulation of datayesyes, multi-version concurrency control (MVCC)yes
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.yes infoIn-Memory realmyesyesno
User concepts infoAccess controlyesnofine grained access rights according to SQL-standardAccess rights for users and roles
More information provided by the system vendor
RealmRocksDBSingleStore infoformer name was MemSQLSplunk
Specific characteristicsNow a part of MongoDB Data Platform , Realm Database is the fast, easy to use, and...
» more
Competitive advantagesRealm ensures offline-first functionality, meaning apps run smoothly and deliver...
» more
Typical application scenariosMobile Consumer Apps First-Line Worker Apps
» more
Key customersCathay Pacific Royal Carribbean Cruise Lines Open Source Database powers apps built...
» more
Market metricsUsed by 100,000+ developers 2 bn installs Currently used in 40k+ applications in...
» more
Licensing and pricing modelsRealm database is licensed under the Apache License v2.0.
» more

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and for displaying vendor-provided information such as key customers, competitive advantages and market metrics.

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More resources
RealmRocksDBSingleStore infoformer name was MemSQLSplunk
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