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DBMS > Realm vs. Tarantool vs. TerminusDB vs. XTDB

System Properties Comparison Realm vs. Tarantool vs. TerminusDB vs. XTDB

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Editorial information provided by DB-Engines
NameRealm  Xexclude from comparisonTarantool  Xexclude from comparisonTerminusDB infoformer name was DataChemist  Xexclude from comparisonXTDB infoformerly named Crux  Xexclude from comparison
DescriptionA DBMS built for use on mobile devices that’s a fast, easy to use alternative to SQLite and Core DataIn-memory computing platform with a flexible data schema for efficiently building high-performance applicationsScalable Graph Database platform making enterprise data available by exploiting inferred entities and relationshipsA general purpose database with bitemporal SQL and Datalog and graph queries
Primary database modelDocument storeDocument store
Key-value store
Relational DBMS
Graph DBMSDocument store
Secondary database modelsSpatial DBMS infowith Tarantool/GIS extensionDocument store
RDF store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score7.60
Rank#52  Overall
#9  Document stores
Score1.72
Rank#144  Overall
#25  Document stores
#25  Key-value stores
#66  Relational DBMS
Score0.17
Rank#325  Overall
#29  Graph DBMS
Score0.11
Rank#343  Overall
#46  Document stores
Websiterealm.iowww.tarantool.ioterminusdb.comgithub.com/­xtdb/­xtdb
www.xtdb.com
Technical documentationrealm.io/­docswww.tarantool.io/­en/­docterminusdb.github.io/­terminusdb/­#www.xtdb.com/­docs
DeveloperRealm, acquired by MongoDB in May 2019VKDataChemist Ltd.Juxt Ltd.
Initial release2014200820182019
Current release2.10.0, May 202211.0.0, January 20231.19, September 2021
License infoCommercial or Open SourceOpen SourceOpen Source infoBSD-2, source-available extensions (modules), commercial licenses for Tarantool EnterpriseOpen Source infoGPL V3Open Source infoMIT License
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageC and C++Prolog, RustClojure
Server operating systemsAndroid
Backend: server-less
iOS
Windows
BSD
Linux
macOS
LinuxAll OS with a Java 8 (and higher) VM
Linux
Data schemeyesFlexible data schema: relational definition for tables with ability to store json-like documents in columnsyesschema-free
Typing infopredefined data types such as float or dateyesstring, double, decimal, uuid, integer, blob, boolean, datetimeyesyes, extensible-data-notation format
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.nononono
Secondary indexesyesyesyes
SQL infoSupport of SQLnoFull-featured ANSI SQL supportSQL-like query language (WOQL)limited SQL, making use of Apache Calcite
APIs and other access methodsOpen binary protocolOWL
RESTful HTTP API
WOQL (Web Object Query Language)
HTTP REST
JDBC
Supported programming languages.Net
Java infowith Android only
Objective-C
React Native
Swift
C
C#
C++
Erlang
Go
Java
JavaScript
Lua
Perl
PHP
Python
Rust
JavaScript
Python
Clojure
Java
Server-side scripts infoStored proceduresno inforuns within the applications so server-side scripts are unnecessaryLua, C and SQL stored proceduresyesno
Triggersyes infoChange Listenersyes, before/after data modification events, on replication events, client session eventsyesno
Partitioning methods infoMethods for storing different data on different nodesnoneSharding, partitioned with virtual buckets by user defined affinity key. Live resharding for scale up and scale down without maintenance downtime.Graph Partitioningnone
Replication methods infoMethods for redundantly storing data on multiple nodesnoneAsynchronous replication with multi-master option
Configurable replication topology (full-mesh, chain, star)
Synchronous quorum replication (with Raft)
Journaling Streamsyes, each node contains all data
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyCasual consistency across sharding partitions
Eventual consistency within replicaset partition infowhen using asyncronous replication
Immediate Consistency within single instance
Sequential consistency including linearizable read within replicaset partition infowhen using Raft
Foreign keys infoReferential integritynoyesyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDACID, with serializable isolation and linearizable read (within partition); Configurable MVCC (within partition); No cross-shard distributed transactionsACIDACID
Concurrency infoSupport for concurrent manipulation of datayes, cooperative multitaskingyesyes
Durability infoSupport for making data persistentyesyes, write ahead loggingyes infoin-memory journalingyes, flexibel persistency by using storage technologies like Apache Kafka, RocksDB or LMDB
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yes infoIn-Memory realmyes, full featured in-memory storage engine with persistence
User concepts infoAccess controlyesAccess Control Lists
Mutual TLS authentication for Tarantol Enterprise
Password based authentication
Role-based access control (RBAC) and LDAP for Tarantol Enterprise
Users and Roles
Role-based access control

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RealmTarantoolTerminusDB infoformer name was DataChemistXTDB infoformerly named Crux
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