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DBMS > OpenQM vs. Realm vs. Redis vs. SQream DB

System Properties Comparison OpenQM vs. Realm vs. Redis vs. SQream DB

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Editorial information provided by DB-Engines
NameOpenQM infoalso called QM  Xexclude from comparisonRealm  Xexclude from comparisonRedis  Xexclude from comparisonSQream DB  Xexclude from comparison
DescriptionQpenQM is a high-performance, self-tuning, multi-value DBMSA DBMS built for use on mobile devices that’s a fast, easy to use alternative to SQLite and Core DataIn-memory data structure store, used as database, cache and message broker infoRedis focuses on performance so most of its design decisions prioritize high performance and very low latencies.a GPU-based, columnar RDBMS for big data analytics workloads
Primary database modelMultivalue DBMSDocument storeKey-value store infoMultiple data types and a rich set of operations, as well as configurable data expiration, eviction and persistenceRelational DBMS
Secondary database modelsDocument store infowith Redis Modules
Graph DBMS infowith Redis Modules
Search engine infowith Redis Modules
Time Series DBMS infowith Redis Modules
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.39
Rank#244  Overall
#10  Multivalue DBMS
Score9.38
Rank#43  Overall
#8  Document stores
Score155.01
Rank#7  Overall
#1  Key-value stores
Score0.61
Rank#213  Overall
#105  Relational DBMS
Websitewww.openqm.comrealm.ioredis.iosqream.com
Technical documentationwww.openqm.com/­support/­documentationrealm.io/­docsredis.io/­documentationdocs.sqream.com
DeveloperMartin PhillipsRealm, acquired by MongoDB in May 2019Salvatore Sanfilippo infoDevelopment sponsored by Redis LabsSQream Technologies
Initial release1993201420092014
Current release3.4-126.0.9 , October 20202020.2, July 2020
License infoCommercial or Open SourceOpen Source infoGPLv2, extended commercial license availableOpen SourceOpen Source infoBSD 3-Clause, commercial license availablecommercial
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.
  • Redis Enterprise Cloud: Fully managed cloud service by the makers of Redis.
  • ScaleGrid for Redis: Fully managed hosting for Redis on AWS, Azure and DigitalOcean with high availability and SSH access on the #1 multi-cloud DBaaS.
Implementation languageCC++, CUDA, Haskell
Server operating systemsAIX
FreeBSD
Linux
macOS
Raspberry Pi
Solaris
Windows
Android
Backend: server-less
iOS
Windows
BSD
Linux
OS X
Windows infoported and maintained by Microsoft Open Technologies, Inc.
Linux
Data schemeyes infowith some exceptionsyesschema-freeyes
Typing infopredefined data types such as float or dateyespartial infoSupported data types are strings, hashes, lists, sets and sorted sets, bit arrays, hyperloglogs and geospatial indexesyes, ANSI Standard SQL Types
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.yesnono
Secondary indexesyesyesyes infowith RediSearch moduleyes
SQL infoSupport of SQLnononoyes
APIs and other access methodsproprietary protocol infoRESP - REdis Serialization Protocol.Net
JDBC
ODBC
Supported programming languages.Net
Basic
C
Java
Objective C
PHP
Python
.Net
Java infowith Android only
Objective-C
React Native
Swift
C
C#
C++
Clojure
Crystal
D
Dart
Elixir
Erlang
Fancy
Go
Haskell
Haxe
Java
JavaScript (Node.js)
Lisp
Lua
MatLab
Objective-C
OCaml
Pascal
Perl
PHP
Prolog
Pure Data
Python
R
Rebol
Ruby
Rust
Scala
Scheme
Smalltalk
Swift
Tcl
Visual Basic
C++
Java
JavaScript (Node.js)
Python
Server-side scripts infoStored proceduresyesno inforuns within the applications so server-side scripts are unnecessaryLuauser defined functions in Python
Triggersyesyes infoChange Listenersnono
Partitioning methods infoMethods for storing different data on different nodesyesnoneShardinghorizontal and vertical partitioning
Replication methods infoMethods for redundantly storing data on multiple nodesyesnoneMulti-source replication infowith Redis Enterprise Pack
Source-replica replication infoChained replication is supported
none
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyEventual Consistency
Strong eventual consistency with CRDTs
Immediate Consistency
Foreign keys infoReferential integritynononono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDACIDOptimistic locking, atomic execution of commands blocks and scriptsACID
Concurrency infoSupport for concurrent manipulation of datayesyes infoData access is serialized by the serveryes
Durability infoSupport for making data persistentyesyesyes infoConfigurable mechanisms for persistency via snapshots and/or operations logsyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yes infoIn-Memory realmyes
User concepts infoAccess controlAccess rights can be defined down to the item levelyesSimple password-based access control infoAccess control lists and SSL are available in the commercial version
More information provided by the system vendor
OpenQM infoalso called QMRealmRedisSQream DB
Specific characteristicsNow a part of MongoDB Data Platform , Realm Database is the fast, easy to use, and...
» more
Redis, benchmarked as the world's fastest database, reduces application complexity,...
» more
Competitive advantagesRealm ensures offline-first functionality, meaning apps run smoothly and deliver...
» more
Redis is an in-memory database platform offering native support of wide range of...
» more
Typical application scenariosMobile Consumer Apps First-Line Worker Apps
» more
Redis powers personalization, real-time fraud detection, IoT, e-commerce, real-time...
» more
Key customersCathay Pacific Royal Carribbean Cruise Lines Open Source Database powers apps built...
» more
Verizon, Vodafone, Atlassian, Trip Advisor, Jet.com, Nokia, Samsung, HTC, Docker,...
» 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
The licensing model is subscription based. Redis Enterprise Cloud is priced according...
» more

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More resources
OpenQM infoalso called QMRealmRedisSQream DB
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