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DBMS > Kdb vs. Microsoft SQL Server vs. OpenMLDB vs. Snowflake

System Properties Comparison Kdb vs. Microsoft SQL Server vs. OpenMLDB vs. Snowflake

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Editorial information provided by DB-Engines
NameKdb  Xexclude from comparisonMicrosoft SQL Server  Xexclude from comparisonOpenMLDB  Xexclude from comparisonSnowflake  Xexclude from comparison
DescriptionHigh performance Time Series DBMSMicrosofts flagship relational DBMSAn open-source machine learning database that provides a feature platform for training and inferenceCloud-based data warehousing service for structured and semi-structured data
Primary database modelTime Series DBMS
Vector DBMS
Relational DBMSTime Series DBMSRelational DBMS
Secondary database modelsRelational DBMSDocument store
Graph DBMS
Spatial DBMS
Relational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score7.55
Rank#53  Overall
#3  Time Series DBMS
#1  Vector DBMS
Score824.29
Rank#3  Overall
#3  Relational DBMS
Score0.02
Rank#367  Overall
#37  Time Series DBMS
Score121.33
Rank#9  Overall
#6  Relational DBMS
Websitekx.comwww.microsoft.com/­en-us/­sql-serveropenmldb.aiwww.snowflake.com
Technical documentationcode.kx.comlearn.microsoft.com/­en-US/­sql/­sql-serveropenmldb.ai/­docs/­zh/­maindocs.snowflake.net/­manuals/­index.html
DeveloperKx Systems, a division of First Derivatives plcMicrosoft4 Paradigm Inc.Snowflake Computing Inc.
Initial release2000 infokdb was released 2000, kdb+ in 2003198920202014
Current release3.6, May 2018SQL Server 2022, November 20222024-2 February 2024
License infoCommercial or Open Sourcecommercial infofree 32-bit versioncommercial inforestricted free version is availableOpen Sourcecommercial
Cloud-based only infoOnly available as a cloud servicenononoyes
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
SQLServer Flex @ STACKIT offers a managed version of SQL Server with adjustable CPU, RAM, storage amount and speed, in enterprise grade to perfectly match all application requirements. All services are 100% GDPR-compliant.
Implementation languageqC++C++, Java, Scala
Server operating systemsLinux
OS X
Solaris
Windows
Linux
Windows
Linuxhosted
Data schemeyesyesFixed schemayes infosupport of semi-structured data formats (JSON, XML, Avro)
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.yesyesnoyes
Secondary indexesyes infotable attribute 'grouped'yesyes
SQL infoSupport of SQLSQL-like query language (q)yesyesyes
APIs and other access methodsHTTP API
JDBC
Jupyter
Kafka
ODBC
WebSocket
ADO.NET
JDBC
ODBC
OLE DB
Tabular Data Stream (TDS)
JDBC
SQLAlchemy
CLI Client
JDBC
ODBC
Supported programming languagesC
C#
C++
Go
J
Java
JavaScript
Lua
MatLab
Perl
PHP
Python
R
Scala
C#
C++
Delphi
Go
Java
JavaScript (Node.js)
PHP
Python
R
Ruby
Visual Basic
C++
Go
Java
Python
Scala
JavaScript (Node.js)
Python
Server-side scripts infoStored proceduresuser defined functionsTransact SQL, .NET languages, R, Python and (with SQL Server 2019) Javanouser defined functions
Triggersyes infowith viewsyesnono infosimilar concept for controling cloud resources
Partitioning methods infoMethods for storing different data on different nodeshorizontal partitioningtables can be distributed across several files (horizontal partitioning); sharding through federationhorizontal partitioningyes
Replication methods infoMethods for redundantly storing data on multiple nodesSource-replica replicationyes, but depending on the SQL-Server EditionSource-replica replicationyes
MapReduce infoOffers an API for user-defined Map/Reduce methodsno infosimilar paradigm used for internal processingnono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integrityyesyesnoyes
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACIDnoACID
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.yesyesyesno
User concepts infoAccess controlrights management via user accountsfine grained access rights according to SQL-standardfine grained access rights according to SQL-standardUsers with fine-grained authorization concept, user roles and pluggable authentication
More information provided by the system vendor
KdbMicrosoft SQL ServerOpenMLDBSnowflake
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
KdbMicrosoft SQL ServerOpenMLDBSnowflake
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