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DBMS > IBM Db2 vs. Immudb vs. KairosDB vs. LevelDB

System Properties Comparison IBM Db2 vs. Immudb vs. KairosDB vs. LevelDB

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Editorial information provided by DB-Engines
NameIBM Db2 infoformerly named DB2 or IBM Database 2  Xexclude from comparisonImmudb  Xexclude from comparisonKairosDB  Xexclude from comparisonLevelDB  Xexclude from comparison
DescriptionCommon in IBM host environments, 2 different versions for host and Windows/LinuxAn open source immutable (append-only) database with cryptographic verification which makes it tamper-resistant and fully auditable.Distributed Time Series DBMS based on Cassandra or H2Embeddable fast key-value storage library that provides an ordered mapping from string keys to string values
Primary database modelRelational DBMS infoSince Version 10.5 support for JSON/BSON documents compatible with MongoDBKey-value storeTime Series DBMSKey-value store
Secondary database modelsDocument store
RDF store infoin Db2 LUW (Linux, Unix, Windows)
Spatial DBMS infowith Db2 Spatial Extender
Relational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score123.05
Rank#9  Overall
#6  Relational DBMS
Score0.24
Rank#295  Overall
#42  Key-value stores
Score0.60
Rank#238  Overall
#20  Time Series DBMS
Score2.33
Rank#111  Overall
#19  Key-value stores
Websitewww.ibm.com/­products/­db2github.com/­codenotary/­immudb
immudb.io
github.com/­kairosdb/­kairosdbgithub.com/­google/­leveldb
Technical documentationwww.ibm.com/­docs/­en/­db2docs.immudb.iokairosdb.github.iogithub.com/­google/­leveldb/­blob/­main/­doc/­index.md
DeveloperIBMCodenotaryGoogle
Initial release1983 infohost version202020132011
Current release12.1, October 20161.2.3, April 20221.2.2, November 20181.23, February 2021
License infoCommercial or Open Sourcecommercial infofree version is availableOpen Source infoApache Version 2.0Open Source infoApache 2.0Open Source infoBSD
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageC and C++GoJavaC++
Server operating systemsAIX
HP-UX
Linux
Solaris
Windows
z/OS
BSD
Linux
macOS
Solaris
Windows
z/OS
Linux
OS X
Windows
Illumos
Linux
OS X
Windows
Data schemeyesschema-freeschema-freeschema-free
Typing infopredefined data types such as float or dateyesyesno
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.nonono
Secondary indexesyesyesnono
SQL infoSupport of SQLyesSQL-like syntaxnono
APIs and other access methodsADO.NET
JDBC
JSON style queries infoMongoDB compatible
ODBC
XQuery
gRPC protocol
PostgreSQL wire protocol
Graphite protocol
HTTP REST
Telnet API
Supported programming languagesC
C#
C++
Cobol
Delphi
Fortran
Java
Perl
PHP
Python
Ruby
Visual Basic
.Net
Go
Java
JavaScript (Node.js)
Python
Java
JavaScript infoNode.js
PHP
Python
C++
Go
Java info3rd party binding
JavaScript (Node.js) info3rd party binding
Python info3rd party binding
Server-side scripts infoStored proceduresyesnonono
Triggersyesnonono
Partitioning methods infoMethods for storing different data on different nodesSharding infoonly with Windows/Unix/Linux VersionShardingSharding infobased on Cassandranone
Replication methods infoMethods for redundantly storing data on multiple nodesyes infowith separate tools (MQ, InfoSphere)selectable replication factor infobased on Cassandranone
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual Consistency infobased on Cassandra
Immediate Consistency infobased on Cassandra
Immediate Consistency
Foreign keys infoReferential integrityyesnonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDACIDnono
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
Durability infoSupport for making data persistentyesyesyesyes infowith automatic compression on writes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.nono
User concepts infoAccess controlfine grained access rights according to SQL-standardsimple password-based access controlno

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More resources
IBM Db2 infoformerly named DB2 or IBM Database 2ImmudbKairosDBLevelDB
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