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DBMS > Blueflood vs. MaxDB vs. OpenMLDB vs. VelocityDB

System Properties Comparison Blueflood vs. MaxDB vs. OpenMLDB vs. VelocityDB

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Editorial information provided by DB-Engines
NameBlueflood  Xexclude from comparisonMaxDB infoformerly named Adabas-D  Xexclude from comparisonOpenMLDB  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionScalable TimeSeries DBMS based on CassandraA robust and reliable RDBMS optimized to run all major SAP solutionsAn open-source machine learning database that provides a feature platform for training and inferenceA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelTime Series DBMSRelational DBMSTime Series DBMSGraph DBMS
Object oriented DBMS
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.06
Rank#352  Overall
#36  Time Series DBMS
Score2.15
Rank#115  Overall
#55  Relational DBMS
Score0.11
Rank#339  Overall
#30  Time Series DBMS
Score0.00
Rank#385  Overall
#40  Graph DBMS
#21  Object oriented DBMS
Websiteblueflood.iomaxdb.sap.comopenmldb.aivelocitydb.com
Technical documentationgithub.com/­rax-maas/­blueflood/­wikimaxdb.sap.com/­documentationopenmldb.ai/­docs/­zh/­mainvelocitydb.com/­UserGuide
DeveloperRackspaceSAP, acquired from Software AG (Adabas-D) in 19974 Paradigm Inc.VelocityDB Inc
Initial release2013198420202011
Current release7.9.10.12, February 20242024-2 February 20247.x
License infoCommercial or Open SourceOpen Source infoApache 2.0commercial infoLimited community edition freeOpen Sourcecommercial
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaC++C++, Java, ScalaC#
Server operating systemsLinux
OS X
AIX
HP-UX
Linux
Solaris
Windows
LinuxAny that supports .NET
Data schemepredefined schemeyesFixed schemayes
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.nononono
Secondary indexesnoyesyesyes
SQL infoSupport of SQLnoyesyesno
APIs and other access methodsHTTP RESTADO.NET
JDBC
ODBC
WebDAV
JDBC
SQLAlchemy
.Net
Supported programming languages.Net
C#
Java
Perl
PHP
Python
C++
Go
Java
Python
Scala
.Net
Server-side scripts infoStored proceduresnoyesnono
TriggersnoyesnoCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesSharding infobased on Cassandranonehorizontal partitioningSharding
Replication methods infoMethods for redundantly storing data on multiple nodesselectable replication factor infobased on CassandraSource-replica replicationSource-replica replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency infobased on Cassandra
Immediate Consistency infobased on Cassandra
Immediate ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynoyesnono
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.nonoyesyes
User concepts infoAccess controlnofine grained access rights according to SQL-standardfine grained access rights according to SQL-standardBased on Windows Authentication

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More resources
BluefloodMaxDB infoformerly named Adabas-DOpenMLDBVelocityDB
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