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DBMS > mSQL vs. OpenQM vs. Quasardb vs. Realm vs. Sequoiadb

System Properties Comparison mSQL vs. OpenQM vs. Quasardb vs. Realm vs. Sequoiadb

Editorial information provided by DB-Engines
NamemSQL infoMini SQL  Xexclude from comparisonOpenQM infoalso called QM  Xexclude from comparisonQuasardb  Xexclude from comparisonRealm  Xexclude from comparisonSequoiadb  Xexclude from comparison
DescriptionmSQL (Mini SQL) is a simple and lightweight RDBMSQpenQM is a high-performance, self-tuning, multi-value DBMSDistributed, high-performance timeseries databaseA DBMS built for use on mobile devices that’s a fast, easy to use alternative to SQLite and Core DataNewSQL database with distributed OLTP and SQL
Primary database modelRelational DBMSMultivalue DBMSTime Series DBMSDocument storeDocument store
Relational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score1.27
Rank#167  Overall
#77  Relational DBMS
Score0.27
Rank#298  Overall
#10  Multivalue DBMS
Score0.14
Rank#332  Overall
#29  Time Series DBMS
Score7.60
Rank#52  Overall
#9  Document stores
Score0.45
Rank#261  Overall
#41  Document stores
#122  Relational DBMS
Websitehughestech.com.au/­products/­msqlwww.rocketsoftware.com/­products/­rocket-multivalue-application-development-platform/­rocket-open-qmquasar.airealm.iowww.sequoiadb.com
Technical documentationdoc.quasar.ai/­masterrealm.io/­docswww.sequoiadb.com/­en/­index.php?m=Files&a=index
DeveloperHughes TechnologiesRocket Software, originally Martin PhillipsquasardbRealm, acquired by MongoDB in May 2019Sequoiadb Ltd.
Initial release19941993200920142013
Current release4.4, October 20213.4-123.14.1, January 2024
License infoCommercial or Open Sourcecommercial infofree licenses can be providedOpen Source infoGPLv2, extended commercial license availablecommercial infoFree community edition, Non-profit organizations and non-commercial usage are eligible for free licensesOpen SourceOpen Source infoServer: AGPL; Client: Apache V2
Cloud-based only infoOnly available as a cloud servicenonononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageCC++C++
Server operating systemsAIX
HP-UX
Linux
OS X
Solaris SPARC/x86
Windows
AIX
FreeBSD
Linux
macOS
Raspberry Pi
Solaris
Windows
BSD
Linux
OS X
Windows
Android
Backend: server-less
iOS
Windows
Linux
Data schemeyesyes infowith some exceptionsschema-freeyesschema-free
Typing infopredefined data types such as float or dateyesyes infointeger and binaryyesyes infooid, date, timestamp, binary, regex
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.noyesnonono
Secondary indexesyesyesyes infowith tagsyesyes
SQL infoSupport of SQLA subset of ANSI SQL is implemented infono subqueries, aggregate functions, views, foreign keys, triggersnoSQL-like query languagenoSQL-like query language
APIs and other access methodsJDBC
ODBC
HTTP APIproprietary protocol using JSON
Supported programming languagesC
C++
Delphi
Java
Perl
PHP
Tcl
.Net
Basic
C
Java
Objective C
PHP
Python
.Net
C
C#
C++
Go
Java
JavaScript (Node.js)
PHP
Python
R
.Net
Java infowith Android only
Objective-C
React Native
Swift
.Net
C++
Java
PHP
Python
Server-side scripts infoStored proceduresnoyesnono inforuns within the applications so server-side scripts are unnecessaryJavaScript
Triggersnoyesnoyes infoChange Listenersno
Partitioning methods infoMethods for storing different data on different nodesnoneyesSharding infoconsistent hashingnoneSharding
Replication methods infoMethods for redundantly storing data on multiple nodesnoneyesSource-replica replication with selectable replication factornoneSource-replica replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonowith Hadoop integrationnono
Consistency concepts infoMethods to ensure consistency in a distributed systemnoneImmediate ConsistencyImmediate ConsistencyImmediate ConsistencyEventual Consistency
Foreign keys infoReferential integritynonononono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACIDACIDACIDDocument is locked during a transaction
Concurrency infoSupport for concurrent manipulation of datanoyesyesyes
Durability infoSupport for making data persistentyesyesyes infoby using LevelDByesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyes infoTransient modeyes infoIn-Memory realmno
User concepts infoAccess controlnoAccess rights can be defined down to the item levelCryptographically strong user authentication and audit trailyessimple password-based access control

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More resources
mSQL infoMini SQLOpenQM infoalso called QMQuasardbRealmSequoiadb
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