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DBMS > Datomic vs. EventStoreDB vs. GeoSpock vs. NSDb

System Properties Comparison Datomic vs. EventStoreDB vs. GeoSpock vs. NSDb

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Editorial information provided by DB-Engines
NameDatomic  Xexclude from comparisonEventStoreDB  Xexclude from comparisonGeoSpock  Xexclude from comparisonNSDb  Xexclude from comparison
GeoSpock seems to be discontinued. Therefore it will be excluded from the DB-Engines ranking.
DescriptionDatomic builds on immutable values, supports point-in-time queries and uses 3rd party systems for durabilityIndustrial-strength, open-source database solution built from the ground up for event sourcing.Spatial and temporal data processing engine for extreme data scaleScalable, High-performance Time Series DBMS designed for Real-time Analytics on top of Kubernetes
Primary database modelRelational DBMSEvent StoreRelational DBMSTime Series DBMS
Secondary database modelsTime Series DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score1.55
Rank#144  Overall
#67  Relational DBMS
Score1.07
Rank#181  Overall
#1  Event Stores
Score0.00
Rank#385  Overall
#40  Time Series DBMS
Websitewww.datomic.comwww.eventstore.comgeospock.comnsdb.io
Technical documentationdocs.datomic.comdevelopers.eventstore.comnsdb.io/­Architecture
DeveloperCognitectEvent Store LimitedGeoSpock
Initial release201220122017
Current release1.0.7180, July 202421.2, February 20212.0, September 2019
License infoCommercial or Open Sourcecommercial infolimited edition freeOpen SourcecommercialOpen Source infoApache Version 2.0
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 languageJava, ClojureJava, JavascriptJava, Scala
Server operating systemsAll OS with a Java VMLinux
Windows
hostedLinux
macOS
Data schemeyesyes
Typing infopredefined data types such as float or dateyesyesyes: int, bigint, decimal, string
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 indexesyestemporal, categoricalall fields are automatically indexed
SQL infoSupport of SQLnoANSI SQL for query only (using Presto)SQL-like query language
APIs and other access methodsRESTful HTTP APIJDBCgRPC
HTTP REST
WebSocket
Supported programming languagesClojure
Java
Java
Scala
Server-side scripts infoStored proceduresyes infoTransaction Functionsnono
TriggersBy using transaction functionsno
Partitioning methods infoMethods for storing different data on different nodesnone infoBut extensive use of caching in the application peersAutomatic shardingSharding
Replication methods infoMethods for redundantly storing data on multiple nodesnone infoBut extensive use of caching in the application peers
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyEventual Consistency
Foreign keys infoReferential integritynonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDnono
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyes infousing external storage systems (e.g. Cassandra, DynamoDB, PostgreSQL, Couchbase and others)yesUsing Apache Lucene
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yes inforecommended only for testing and developmentno
User concepts infoAccess controlnoAccess rights for users can be defined per table

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More resources
DatomicEventStoreDBGeoSpockNSDb
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