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DBMS > EJDB vs. PostGIS vs. Rockset vs. VelocityDB

System Properties Comparison EJDB vs. PostGIS vs. Rockset vs. VelocityDB

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Editorial information provided by DB-Engines
NameEJDB  Xexclude from comparisonPostGIS  Xexclude from comparisonRockset  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionEmbeddable document-store database library with JSON representation of queries (in MongoDB style)Spatial extension of PostgreSQLA scalable, reliable search and analytics service in the cloud, built on RocksDBA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelDocument storeSpatial DBMSDocument storeGraph DBMS
Object oriented DBMS
Secondary database modelsRelational DBMSRelational DBMS
Search engine
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.27
Rank#297  Overall
#44  Document stores
Score22.69
Rank#29  Overall
#1  Spatial DBMS
Score0.79
Rank#211  Overall
#35  Document stores
Score0.05
Rank#358  Overall
#36  Graph DBMS
#16  Object oriented DBMS
Websitegithub.com/­Softmotions/­ejdbpostgis.netrockset.comvelocitydb.com
Technical documentationgithub.com/­Softmotions/­ejdb/­blob/­master/­README.mdpostgis.net/­documentationdocs.rockset.comvelocitydb.com/­UserGuide
DeveloperSoftmotionsRocksetVelocityDB Inc
Initial release2012200520192011
Current release3.4.2, February 20247.x
License infoCommercial or Open SourceOpen Source infoGPLv2Open Source infoGPL v2.0commercialcommercial
Cloud-based only infoOnly available as a cloud servicenonoyesno
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageCCC++C#
Server operating systemsserver-lesshostedAny that supports .NET
Data schemeschema-freeyesschema-freeyes
Typing infopredefined data types such as float or dateyes infostring, integer, double, bool, date, object_idyesdynamic typingyes
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.yesno infoingestion from XML files supportedno
Secondary indexesnoyesall fields are automatically indexedyes
SQL infoSupport of SQLnoyesRead-only SQL queries, including JOINsno
APIs and other access methodsin-process shared libraryHTTP REST.Net
Supported programming languagesActionscript
C
C#
C++
Go
Java
JavaScript (Node.js)
Lua
Objective-C
Pike
Python
Ruby
Go
Java
JavaScript (Node.js)
Python
.Net
Server-side scripts infoStored proceduresnouser defined functionsnono
TriggersnoyesnoCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesnoneyes infobased on PostgreSQLAutomatic shardingSharding
Replication methods infoMethods for redundantly storing data on multiple nodesnoneyes infobased on PostgreSQLyes
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual ConsistencyImmediate Consistency
Foreign keys infoReferential integrityno infotypically not needed, however similar functionality with collection joins possibleyesnono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACIDnoACID
Concurrency infoSupport for concurrent manipulation of datayes infoRead/Write Lockingyesyesyes
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.noyes
User concepts infoAccess controlnoyes infobased on PostgreSQLAccess rights for users and organizations can be defined via Rockset consoleBased on Windows Authentication

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More resources
EJDBPostGISRocksetVelocityDB
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