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DBMS > JSqlDb vs. Kdb vs. PostGIS vs. QuestDB

System Properties Comparison JSqlDb vs. Kdb vs. PostGIS vs. QuestDB

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Editorial information provided by DB-Engines
NameJSqlDb  Xexclude from comparisonKdb  Xexclude from comparisonPostGIS  Xexclude from comparisonQuestDB  Xexclude from comparison
JSqlDB seems to be discontinued. Therefore it is excluded from the DB-Engines ranking.
DescriptionJavaScript Query Language Database, stores JavaScript objects and primitivesHigh performance Time Series DBMSSpatial extension of PostgreSQLA high performance open source SQL database for time series data
Primary database modelDocument store
Object oriented DBMS
Time Series DBMS
Vector DBMS
Spatial DBMSTime Series DBMS
Secondary database modelsRelational DBMSRelational DBMSRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score7.73
Rank#45  Overall
#2  Time Series DBMS
#1  Vector DBMS
Score20.16
Rank#29  Overall
#1  Spatial DBMS
Score2.81
Rank#98  Overall
#7  Time Series DBMS
Websitejsqldb.org (offline)kx.compostgis.netquestdb.io
Technical documentationcode.kx.compostgis.net/­documentationquestdb.io/­docs
DeveloperKonrad von BackstromKx Systems, a division of First Derivatives plcQuestDB Technology Inc
Initial release20182000 infokdb was released 2000, kdb+ in 200320052014
Current release0.8, December 20183.6, May 20183.4.2, February 2024
License infoCommercial or Open SourceOpen Sourcecommercial infofree 32-bit versionOpen Source infoGPL v2.0Open Source infoApache 2.0
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageqCJava (Zero-GC), C++, Rust
Server operating systemsLinux
macOS
Windows
Linux
OS X
Solaris
Windows
Linux
macOS
Windows
Data schemeschema-freeyesyesyes infoschema-free via InfluxDB Line Protocol
Typing infopredefined data types such as float or datenoyesyesyes
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.noyesyesno
Secondary indexesnoyes infotable attribute 'grouped'yesno
SQL infoSupport of SQLnoSQL-like query language (q)yesSQL with time-series extensions
APIs and other access methodsHTTP API
JDBC
Jupyter
Kafka
ODBC
WebSocket
HTTP REST
InfluxDB Line Protocol (TCP/UDP)
JDBC
PostgreSQL wire protocol
Supported programming languagesJavaScriptC
C#
C++
Go
J
Java
JavaScript
Lua
MatLab
Perl
PHP
Python
R
Scala
C infoPostgreSQL driver
C++
Go
Java
JavaScript (Node.js)
Python
Rust infoover HTTP
Server-side scripts infoStored proceduresfunctions in JavaScriptuser defined functionsuser defined functionsno
Triggersnoyes infowith viewsyesno
Partitioning methods infoMethods for storing different data on different nodesnonehorizontal partitioningyes infobased on PostgreSQLhorizontal partitioning (by timestamps)
Replication methods infoMethods for redundantly storing data on multiple nodesnoneSource-replica replicationyes infobased on PostgreSQLSource-replica replication with eventual consistency
MapReduce infoOffers an API for user-defined Map/Reduce methodsnono infosimilar paradigm used for internal processingnono
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 datanoACIDACID for single-table writes
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyes infousing RocksDByesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesnoyes infothrough memory mapped files
User concepts infoAccess controlrights management via user accountsyes infobased on PostgreSQL
More information provided by the system vendor
JSqlDbKdbPostGISQuestDB
Specific characteristicsIntegrated columnar database & programming system for streaming, real time and historical...
» more
Competitive advantagesprovides seamless scalability; runs on industry standard server platforms; is top-ranked...
» more
Typical application scenariostick database streaming sensor data massive intelligence applications oil and gas...
» more
Key customersGoldman Sachs Morgan Stanley Merrill Lynch J.P. Morgan Deutsche Bank IEX Securities...
» more
Market metricskdb+ performance and reliability proven by our customers in critical infrastructure...
» more
Licensing and pricing modelsupon request
» more
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More resources
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