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DBMS > Apache Druid vs. openGauss vs. TerminusDB vs. VelocityDB

System Properties Comparison Apache Druid vs. openGauss vs. TerminusDB vs. VelocityDB

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Editorial information provided by DB-Engines
NameApache Druid  Xexclude from comparisonopenGauss  Xexclude from comparisonTerminusDB infoformer name was DataChemist  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionOpen-source analytics data store designed for sub-second OLAP queries on high dimensionality and high cardinality dataAn enterprise-class RDBMS compatible with high-performance, high-availability and high-performance originally developed by HuaweiScalable 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 modelRelational DBMS
Time Series DBMS
Relational DBMSGraph DBMSGraph DBMS
Object oriented DBMS
Secondary database modelsDocument store
Spatial DBMS
Document store
RDF store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score3.34
Rank#88  Overall
#48  Relational DBMS
#7  Time Series DBMS
Score1.08
Rank#183  Overall
#84  Relational DBMS
Score0.17
Rank#325  Overall
#29  Graph DBMS
Score0.05
Rank#358  Overall
#36  Graph DBMS
#16  Object oriented DBMS
Websitedruid.apache.orggitee.com/­opengauss
opengauss.org
terminusdb.comvelocitydb.com
Technical documentationdruid.apache.org/­docs/­latest/­designdocs.opengauss.org/­en
gitee.com/­opengauss/­docs
terminusdb.github.io/­terminusdb/­#velocitydb.com/­UserGuide
DeveloperApache Software Foundation and contributorsHuawei and openGauss communityDataChemist Ltd.VelocityDB Inc
Initial release2012201920182011
Current release29.0.1, April 20243.0, March 202211.0.0, January 20237.x
License infoCommercial or Open SourceOpen Source infoApache license v2Open 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 languageJavaC, C++, JavaProlog, RustC#
Server operating systemsLinux
OS X
Unix
LinuxLinuxAny that supports .NET
Data schemeyes infoschema-less columns are supportedyesyesyes
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.nononono
Secondary indexesyesyesyes
SQL infoSupport of SQLSQL for queryingANSI SQL 2011SQL-like query language (WOQL)no
APIs and other access methodsJDBC
RESTful HTTP/JSON API
JDBC
ODBC
OWL
RESTful HTTP API
WOQL (Web Object Query Language)
.Net
Supported programming languagesClojure
JavaScript
PHP
Python
R
Ruby
Scala
C
C++
Java
JavaScript
Python
.Net
Server-side scripts infoStored proceduresnoyesyesno
TriggersnoyesyesCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesSharding infomanual/auto, time-basedhorizontal partitioning (by range, list and hash)Graph PartitioningSharding
Replication methods infoMethods for redundantly storing data on multiple nodesyes, via HDFS, S3 or other storage enginesSource-replica replicationJournaling Streams
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynoyesyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACIDACIDACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
Durability infoSupport for making data persistentyesyesyes infoin-memory journalingyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.nonoyes
User concepts infoAccess controlRBAC using LDAP or Druid internals for users and groups for read/write by datasource and systemAccess rights for users, groups and roles according to SQL-standardRole-based access controlBased on Windows Authentication

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More resources
Apache DruidopenGaussTerminusDB infoformer name was DataChemistVelocityDB
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