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DBMS > Kdb vs. Microsoft SQL Server vs. NCache vs. ToroDB

System Properties Comparison Kdb vs. Microsoft SQL Server vs. NCache vs. ToroDB

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Editorial information provided by DB-Engines
NameKdb  Xexclude from comparisonMicrosoft SQL Server  Xexclude from comparisonNCache  Xexclude from comparisonToroDB  Xexclude from comparison
ToroDB seems to be discontinued. Therefore it is excluded from the DB-Engines Ranking.
DescriptionHigh performance Time Series DBMSMicrosofts flagship relational DBMSOpen-Source and Enterprise in-memory Key-Value StoreA MongoDB-compatible JSON document store, built on top of PostgreSQL
Primary database modelTime Series DBMS
Vector DBMS
Relational DBMSKey-value storeDocument store
Secondary database modelsRelational DBMSDocument store
Graph DBMS
Spatial DBMS
Document store
Search engine infoUsing distributed Lucene
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score7.71
Rank#49  Overall
#2  Time Series DBMS
#1  Vector DBMS
Score821.56
Rank#3  Overall
#3  Relational DBMS
Score0.96
Rank#195  Overall
#29  Key-value stores
Websitekx.comwww.microsoft.com/­en-us/­sql-serverwww.alachisoft.com/­ncachegithub.com/­torodb/­server
Technical documentationcode.kx.comlearn.microsoft.com/­en-US/­sql/­sql-serverwww.alachisoft.com/­resources/­docs
DeveloperKx Systems, a division of First Derivatives plcMicrosoftAlachisoft8Kdata
Initial release2000 infokdb was released 2000, kdb+ in 2003198920052016
Current release3.6, May 2018SQL Server 2022, November 20225.3.3, April 2024
License infoCommercial or Open Sourcecommercial infofree 32-bit versioncommercial inforestricted free version is availableOpen Source infoEnterprise Edition availableOpen Source infoAGPL-V3
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageqC++C#, .NET, .NET Core, JavaJava
Server operating systemsLinux
OS X
Solaris
Windows
Linux
Windows
Linux
Windows
All OS with a Java 7 VM
Data schemeyesyesschema-freeschema-free
Typing infopredefined data types such as float or dateyesyespartial infoSupported data types are Lists, Queues, Hashsets, Dictionary and Counteryes infostring, integer, double, boolean, date, object_id
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.yesyesnono
Secondary indexesyes infotable attribute 'grouped'yesyes
SQL infoSupport of SQLSQL-like query language (q)yesSQL-like query syntax and LINQ for searching the cache. Cache Synchronization with SQL Server using SQL dependency.
APIs and other access methodsHTTP API
JDBC
Jupyter
Kafka
ODBC
WebSocket
ADO.NET
JDBC
ODBC
OLE DB
Tabular Data Stream (TDS)
IDistributedCache
JCache
LINQ
Proprietary native API
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
.Net
.Net Core
C#
Java
JavaScript (Node.js)
Python
Scala
Server-side scripts infoStored proceduresuser defined functionsTransact SQL, .NET languages, R, Python and (with SQL Server 2019) Javano infosupport for stored procedures with SQL-Server CLR
Triggersyes infowith viewsyesyes infoNotificationsno
Partitioning methods infoMethods for storing different data on different nodeshorizontal partitioningtables can be distributed across several files (horizontal partitioning); sharding through federationyesSharding
Replication methods infoMethods for redundantly storing data on multiple nodesSource-replica replicationyes, but depending on the SQL-Server Editionyes, with selectable consistency levelSource-replica replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsno infosimilar paradigm used for internal processingnoyes
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyEventual Consistency
Immediate Consistency
Strong Eventual Consistency over WAN with Conflict Resolution using Bridge Topology
Eventual Consistency
Immediate Consistency
Foreign keys infoReferential integrityyesyesnono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACIDoptimistic locking and pessimistic lockingno
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.yesyesyes
User concepts infoAccess controlrights management via user accountsfine grained access rights according to SQL-standardAuthentication to access the cache via Active Directory/LDAP (possible roles: user, administrator)Access rights for users and roles
More information provided by the system vendor
KdbMicrosoft SQL ServerNCacheToroDB
Specific characteristicsIntegrated columnar database & programming system for streaming, real time and historical...
» more
NCache has been the market leader in .NET Distributed Caching since 2005 . NCache...
» more
Competitive advantagesprovides seamless scalability; runs on industry standard server platforms; is top-ranked...
» more
NCache is 100% .NET/ .NET Core based which fully supports ASP.NET Core Sessions ,...
» more
Typical application scenariostick database streaming sensor data massive intelligence applications oil and gas...
» more
NCache enables industries like retail, finance, banking IoT, travel, ecommerce, healthcare...
» more
Key customersGoldman Sachs Morgan Stanley Merrill Lynch J.P. Morgan Deutsche Bank IEX Securities...
» more
Bank of America, Citi, Natures Way, Charter Spectrum, Barclays, Henry Schein, GBM,...
» more
Market metricskdb+ performance and reliability proven by our customers in critical infrastructure...
» more
Market Leader in .NET Distributed Caching since 2005.
» more
Licensing and pricing modelsupon request
» more
NCache Open Source is free on an as-is basis without any support. NCache Enterprise...
» more

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3rd partiesNavicat Monitor is a safe, simple and agentless remote server monitoring tool for SQL Server and many other database management systems.
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Navicat for SQL Server gives you a fully graphical approach to database management and development.
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More resources
KdbMicrosoft SQL ServerNCacheToroDB
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