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DBMS > DataFS vs. Kdb vs. LMDB vs. MaxDB vs. Memcached

System Properties Comparison DataFS vs. Kdb vs. LMDB vs. MaxDB vs. Memcached

Editorial information provided by DB-Engines
NameDataFS  Xexclude from comparisonKdb  Xexclude from comparisonLMDB  Xexclude from comparisonMaxDB infoformerly named Adabas-D  Xexclude from comparisonMemcached  Xexclude from comparison
DescriptionAll data is stored inside objects which are linked by so-called link attributes. Objects consist of classes which can be extended and de-extended at runtime. Graphs can be defined with a struct.High performance Time Series DBMSA high performant, light-weight, embedded key-value database libraryA robust and reliable RDBMS optimized to run all major SAP solutionsIn-memory key-value store, originally intended for caching
Primary database modelObject oriented DBMSTime Series DBMS
Vector DBMS
Key-value storeRelational DBMSKey-value store
Secondary database modelsGraph DBMSRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.02
Rank#369  Overall
#18  Object oriented DBMS
Score7.73
Rank#45  Overall
#2  Time Series DBMS
#1  Vector DBMS
Score1.94
Rank#120  Overall
#20  Key-value stores
Score2.15
Rank#115  Overall
#55  Relational DBMS
Score16.84
Rank#32  Overall
#4  Key-value stores
Websitenewdatabase.comkx.comwww.symas.com/­symas-embedded-database-lmdbmaxdb.sap.comwww.memcached.org
Technical documentationdev.mobiland.com/­Overview.xspcode.kx.comwww.lmdb.tech/­docmaxdb.sap.com/­documentationgithub.com/­memcached/­memcached/­wiki
DeveloperMobiland AGKx Systems, a division of First Derivatives plcSymasSAP, acquired from Software AG (Adabas-D) in 1997Danga Interactive infooriginally developed by Brad Fitzpatrick for LiveJournal
Initial release20182000 infokdb was released 2000, kdb+ in 2003201119842003
Current release1.1.263, October 20223.6, May 20180.9.32, January 20247.9.10.12, February 20241.6.29, June 2024
License infoCommercial or Open Sourcecommercialcommercial infofree 32-bit versionOpen Sourcecommercial infoLimited community edition freeOpen Source infoBSD license
Cloud-based only infoOnly available as a cloud servicenonononono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageqCC++C
Server operating systemsWindowsLinux
OS X
Solaris
Windows
Linux
Unix
Windows
AIX
HP-UX
Linux
Solaris
Windows
FreeBSD
Linux
OS X
Unix
Windows
Data schemeClasses, Structs, and Lists are written in proprietary DataTypeDefinitionLanguage (.dtdl) and Objects consisting of those are written in proprietary DataAccessDefinitionLanguage (.dadl)yesschema-freeyesschema-free
Typing infopredefined data types such as float or dateyesyesyesno
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.noyesnono
Secondary indexesnoyes infotable attribute 'grouped'noyesno
SQL infoSupport of SQLnoSQL-like query language (q)noyesno
APIs and other access methods.NET Client API
Proprietary client DLL
WinRT client
HTTP API
JDBC
Jupyter
Kafka
ODBC
WebSocket
ADO.NET
JDBC
ODBC
WebDAV
Proprietary protocol
Supported programming languages.Net
C
C#
C++
VB.Net
C
C#
C++
Go
J
Java
JavaScript
Lua
MatLab
Perl
PHP
Python
R
Scala
.Net
C
C++
Clojure
Go
Haskell
Java
JavaScript (Node.js)
Lisp
Lua
MatLab
Nim
Objective C
OCaml
Perl
PHP
Python
R
Ruby
Rust
Swift
Tcl
.Net
C#
Java
Perl
PHP
Python
.Net
C
C++
ColdFusion
Erlang
Java
Lisp
Lua
OCaml
Perl
PHP
Python
Ruby
Server-side scripts infoStored proceduresuser defined functionsnoyesno
Triggersno, except callback-events from server when changes happenedyes infowith viewsnoyesno
Partitioning methods infoMethods for storing different data on different nodesProprietary Sharding systemhorizontal partitioningnonenonenone
Replication methods infoMethods for redundantly storing data on multiple nodesSource-replica replicationnoneSource-replica replicationnone infoRepcached, a Memcached patch, provides this functionallity
MapReduce infoOffers an API for user-defined Map/Reduce methodsnono infosimilar paradigm used for internal processingnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integrityyesyesnoyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDnoACIDACIDno
Concurrency infoSupport for concurrent manipulation of datayesyesyesyesyes
Durability infoSupport for making data persistentyesyesyesyesno
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyesyesno
User concepts infoAccess controlWindows-Profilerights management via user accountsnofine grained access rights according to SQL-standardyes infousing SASL (Simple Authentication and Security Layer) protocol
More information provided by the system vendor
DataFSKdbLMDBMaxDB infoformerly named Adabas-DMemcached
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
DataFSKdbLMDBMaxDB infoformerly named Adabas-DMemcached
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