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DBMS > Apache IoTDB vs. CrateDB vs. Kingbase vs. Postgres-XL

System Properties Comparison Apache IoTDB vs. CrateDB vs. Kingbase vs. Postgres-XL

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Editorial information provided by DB-Engines
NameApache IoTDB  Xexclude from comparisonCrateDB  Xexclude from comparisonKingbase  Xexclude from comparisonPostgres-XL  Xexclude from comparison
DescriptionAn IoT native database with high performance for data management and analysis, deployable on the edge and the cloud and integrated with Hadoop, Spark and FlinkDistributed Date Store based on LuceneAn enterprise-class RDBMS compatible with PostgreSQL and Oracle and widely used in China.Based on PostgreSQL enhanced with MPP and write-scale-out cluster features
Primary database modelTime Series DBMSRelational DBMS
Search engine
Relational DBMSRelational DBMS
Secondary database modelsDocument store
Time Series DBMS
Document store
Spatial DBMS
Document store
Spatial DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.42
Rank#253  Overall
#20  Time Series DBMS
Score0.97
Rank#178  Overall
#86  Relational DBMS
#13  Search engines
Score0.37
Rank#260  Overall
#121  Relational DBMS
Score0.70
Rank#206  Overall
#97  Relational DBMS
Websiteiotdb.apache.orgcrate.iowww.kingbase.com.cnwww.postgres-xl.org
Technical documentationcrate.io/­docsbbs.kingbase.com.cn/­chess_wenku-index.htmlwww.postgres-xl.org/­documentation
DeveloperApache Software FoundationCrateBeiJing KINGBASE Information technologies inc.
Initial release2018201319992014 infosince 2012, originally named StormDB
Current releaseV8.0, August 202110 R1, October 2018
License infoCommercial or Open SourceOpen Source infoApache Version 2.0Open SourcecommercialOpen Source infoMozilla public license
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaJavaC and JavaC
Server operating systemsAll OS with a Java VM (>= 1.8)All OS with a Java 7 (and higher) VMLinux
Windows
Linux
macOS
Data schemeyesFlexible Schema (defined schema, partial schema, schema free)yesyes
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.nonoyesyes infoXML type, but no XML query functionality
Secondary indexesyesyesyesyes
SQL infoSupport of SQLSQL-like query languageyes, but no triggers and constraintsStandard with numerous extensionsyes infodistributed, parallel query execution
APIs and other access methodsJDBC
Native API
ADO.NET infocommunity maintained client
JDBC
MQTT (Message Queue Telemetry Transport)
PostgreSQL wire protocol
Prometheus Remote Read/Write
RESTful HTTP API
ADO.NET
gokb
JDBC
kdbndp
ODBC
PDI
PDO
Pro*C
psycopg2
QT
ADO.NET
JDBC
native C library
ODBC
streaming API for large objects
Supported programming languagesErlang
Go infocommunity maintained client
Java
JavaScript (Node.js) infocommunity maintained client
Perl infocommunity maintained client
PHP
Python
Ruby infocommunity maintained client
Scala infocommunity maintained client
.Net
C
C++
Go
Java
JavaScript (Node.js)
Perl
PHP
Python
.Net
C
C++
Delphi
Erlang
Java
JavaScript (Node.js)
Perl
PHP
Python
Tcl
Server-side scripts infoStored proceduresyesuser defined functionsuser defined functionsuser defined functions
Triggersyesnoyesyes
Partitioning methods infoMethods for storing different data on different nodesShardinghorizontal partitioning (by range, list and hash) and vertical partitioninghorizontal partitioning
Replication methods infoMethods for redundantly storing data on multiple nodesselectable replication factoryes
MapReduce infoOffers an API for user-defined Map/Reduce methodsIntegration with Hadoop and Sparknonono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency
Strong Consistency with Raft
Eventual Consistency
Read Your Own Writes Consistency infofor primary key lookups
Immediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynonoyesyes
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanono infounique row identifiers can be used for implementing an optimistic concurrency control strategyACIDACID infoMVCC
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
Durability infoSupport for making data persistentyesyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesnono
User concepts infoAccess controlyesrights management via user accountsfine grained access rights according to SQL-standardfine grained access rights according to SQL-standard
More information provided by the system vendor
Apache IoTDBCrateDBKingbasePostgres-XL
Specific characteristicsCrateDB is an open source distributed SQL database that spreads data and processing...
» more
An enterprise-class RDBMS compatible with PostgreSQL and Oracle. It has the following...
» more
Competitive advantagesCrateDB is typically used in operational analytics applications, particularly those...
» more
Complete database management platform with Integrated Development Environment Tool,...
» more
Typical application scenariosCrateDB is ideal for integrating and analyzing streams of data--often machine-generated--in...
» more
New applications for transactional and mixed workloads that need to integrate with...
» more
Key customersCrateDB customers include McAfee, Qualtrics , Nokia, NBC Golfnow , Digital Domain...
» more
The main customers are: China National Petroleum Corporation China Petrochemical...
» more
Market metricsThe CrateDB open source project was started in 2014. CrateDB was the winner of TechCrunch...
» more
At present, the main market is in China, but expansion to the international market...
» more
Licensing and pricing modelsCrateDB pricing CrateDB Community Edition is open source and free to use under the...
» more
Business license. Various sales modes: for example, sales by set, sales by CPU quantity,...
» more

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More resources
Apache IoTDBCrateDBKingbasePostgres-XL
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