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DBMS > Blueflood vs. H2GIS vs. VelocityDB

System Properties Comparison Blueflood vs. H2GIS vs. VelocityDB

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Editorial information provided by DB-Engines
NameBlueflood  Xexclude from comparisonH2GIS  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionScalable TimeSeries DBMS based on CassandraSpatial extension of H2A .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelTime Series DBMSSpatial 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#356  Overall
#36  Time Series DBMS
Score0.00
Rank#389  Overall
#7  Spatial DBMS
Score0.03
Rank#370  Overall
#39  Graph DBMS
#18  Object oriented DBMS
Websiteblueflood.iowww.h2gis.orgvelocitydb.com
Technical documentationgithub.com/­rax-maas/­blueflood/­wikiwww.h2gis.org/­docs/­homevelocitydb.com/­UserGuide
DeveloperRackspaceCNRSVelocityDB Inc
Initial release201320132011
Current release7.x
License infoCommercial or Open SourceOpen Source infoApache 2.0Open Source infoLGPL 3.0commercial
Cloud-based only infoOnly available as a cloud servicenonono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaJavaC#
Server operating systemsLinux
OS X
Any that supports .NET
Data schemepredefined schemeyesyes
Typing infopredefined data types such as float or dateyesyesyes
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 indexesnoyesyes
SQL infoSupport of SQLnoyesno
APIs and other access methodsHTTP REST.Net
Supported programming languagesJava.Net
Server-side scripts infoStored proceduresnoyes infobased on H2no
TriggersnoyesCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesSharding infobased on CassandranoneSharding
Replication methods infoMethods for redundantly storing data on multiple nodesselectable replication factor infobased on Cassandrayes infobased on H2
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 Consistency
Foreign keys infoReferential integritynoyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACIDACID
Concurrency infoSupport for concurrent manipulation of datayesyes, multi-version concurrency control (MVCC)yes
Durability infoSupport for making data persistentyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyesyes
User concepts infoAccess controlnoyes infobased on H2Based on Windows Authentication

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BluefloodH2GISVelocityDB
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