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DBMS > Hazelcast vs. SQL.JS vs. TerminusDB vs. VelocityDB

System Properties Comparison Hazelcast vs. SQL.JS vs. TerminusDB vs. VelocityDB

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Editorial information provided by DB-Engines
NameHazelcast  Xexclude from comparisonSQL.JS  Xexclude from comparisonTerminusDB infoformer name was DataChemist  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionA widely adopted in-memory data gridPort of SQLite to JavaScriptScalable Graph Database platform making enterprise data available by exploiting inferred entities and relationshipsA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelKey-value storeRelational DBMSGraph DBMSGraph DBMS
Object oriented DBMS
Secondary database modelsDocument store infoJSON support with IMDG 3.12Document store
RDF store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score5.97
Rank#57  Overall
#6  Key-value stores
Score0.53
Rank#252  Overall
#116  Relational DBMS
Score0.17
Rank#325  Overall
#29  Graph DBMS
Score0.05
Rank#358  Overall
#36  Graph DBMS
#16  Object oriented DBMS
Websitehazelcast.comsql.js.orgterminusdb.comvelocitydb.com
Technical documentationhazelcast.org/­imdg/­docssql.js.org/­documentation/­index.htmlterminusdb.github.io/­terminusdb/­#velocitydb.com/­UserGuide
DeveloperHazelcastAlon Zakai infoenhancements implemented by othersDataChemist Ltd.VelocityDB Inc
Initial release2008201220182011
Current release5.3.6, November 202311.0.0, January 20237.x
License infoCommercial or Open SourceOpen Source infoApache Version 2; commercial licenses availableOpen SourceOpen Source infoGPL V3commercial
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaJavaScriptProlog, RustC#
Server operating systemsAll OS with a Java VMserver-less, requires a JavaScript environment (browser, Node.js)LinuxAny that supports .NET
Data schemeschema-freeyesyesyes
Typing infopredefined data types such as float or dateyesyesyesyes
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.yes infothe object must implement a serialization strategynonono
Secondary indexesyesyes
SQL infoSupport of SQLSQL-like query languageyes infoSQL-92 is not fully supportedSQL-like query language (WOQL)no
APIs and other access methodsJCache
JPA
Memcached protocol
RESTful HTTP API
JavaScript APIOWL
RESTful HTTP API
WOQL (Web Object Query Language)
.Net
Supported programming languages.Net
C#
C++
Clojure
Go
Java
JavaScript (Node.js)
Python
Scala
JavaScriptJavaScript
Python
.Net
Server-side scripts infoStored proceduresyes infoEvent Listeners, Executor Servicesnoyesno
Triggersyes infoEventsnoyesCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesShardingnoneGraph PartitioningSharding
Replication methods infoMethods for redundantly storing data on multiple nodesyes infoReplicated MapnoneJournaling Streams
MapReduce infoOffers an API for user-defined Map/Reduce methodsyesnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate Consistency or Eventual Consistency selectable by user infoRaft Consensus AlgorithmnoneImmediate Consistency
Foreign keys infoReferential integritynoyesyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataone or two-phase-commit; repeatable reads; read commitedACIDACIDACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyesno infoexcept by serializing a db to a fileyes infoin-memory journalingyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyesyes
User concepts infoAccess controlRole-based access controlnoRole-based access controlBased on Windows Authentication

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More resources
HazelcastSQL.JSTerminusDB infoformer name was DataChemistVelocityDB
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