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DBMS > EJDB vs. HarperDB vs. Yaacomo

System Properties Comparison EJDB vs. HarperDB vs. Yaacomo

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Editorial information provided by DB-Engines
NameEJDB  Xexclude from comparisonHarperDB  Xexclude from comparisonYaacomo  Xexclude from comparison
DescriptionEmbeddable document-store database library with JSON representation of queries (in MongoDB style)A distributed database focused on speed and ease of use. It has an intuitive REST API, and supports NoSQL and SQL including joins. HarperDB leverages standard interfaces, and users can be up and running in minutes.OpenCL based in-memory RDBMS, designed for efficiently utilizing the hardware via parallel computing
Primary database modelDocument storeDocument storeRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.10
Rank#314  Overall
#41  Document stores
Score0.52
Rank#238  Overall
#37  Document stores
Score0.00
Rank#354  Overall
#152  Relational DBMS
Websiteejdb.orgharperdb.ioyaacomo.com
Technical documentationgithub.com/­Softmotions/­ejdb/­blob/­master/­README.mdharperdb.io/­developers/­documentation/­overview
DeveloperSoftmotionsHarperDBQ2WEB GmbH
Initial release201220172009
Current release3.1, August 2021
License infoCommercial or Open SourceOpen Source infoGPLv2commercial infofree community edition availablecommercial
Cloud-based only infoOnly available as a cloud servicenonono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageCNode.js
Server operating systemsserver-lessLinux
OS X
Android
Linux
Windows
Data schemeschema-freedynamic schemayes
Typing infopredefined data types such as float or dateyes infostring, integer, double, bool, date, object_idyes infoJSON data typesyes
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.nono
Secondary indexesnoyesyes
SQL infoSupport of SQLnoSQL-like data manipulation statementsyes
APIs and other access methodsin-process shared libraryJDBC
ODBC
React Hooks
RESTful HTTP/JSON API
WebSocket
JDBC
ODBC
Supported programming languagesActionscript
C
C#
C++
Go
Java
JavaScript (Node.js)
Lua
Objective-C
Pike
Python
Ruby
.Net
C
C#
C++
ColdFusion
D
Dart
Delphi
Erlang
Go
Haskell
Java
JavaScript (Node.js)
Lisp
MatLab
Objective C
Perl
PHP
PowerShell
Prolog
Python
R
Ruby
Rust
Scala
Swift
Server-side scripts infoStored proceduresnoCustom Functions infosince release 3.1
Triggersnonoyes
Partitioning methods infoMethods for storing different data on different nodesnoneA table resides as a whole on one (or more) nodes in a clusterhorizontal partitioning
Replication methods infoMethods for redundantly storing data on multiple nodesnoneyes infothe nodes on which a table resides can be definedSource-replica replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integrityno infotypically not needed, however similar functionality with collection joins possiblenoyes
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoAtomic execution of specific operationsACID
Concurrency infoSupport for concurrent manipulation of datayes infoRead/Write Lockingyesyes
Durability infoSupport for making data persistentyesyes, using LMDByes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyes
User concepts infoAccess controlnoAccess rights for users and rolesfine grained access rights according to SQL-standard
More information provided by the system vendor
EJDBHarperDBYaacomo
Specific characteristicsHarperDB is the first distributed database with hybrid SQL & NoSQL functionality...
» more
Competitive advantagesBy combining the functionality of the best SQL, NoSQL, and NewSQL products on the...
» more
Typical application scenariosUse cases where HarperDB is a better fit than other solutions include: Rapid app...
» more
Key customersA few highlighted customers include: US Army, US Airforce, Chelan PUD, TATA, & Lumen....
» more
Market metricsOver 26K total HarperDB users : 12,700+ npm downloads 10,000+ on Docker Hub 3,400+...
» more
Licensing and pricing modelsHarperDB follows a freemium/premium model . A data base is only as powerful as it...
» more

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More resources
EJDBHarperDBYaacomo
Recent citations in the news

Jaxon Repp on HarperDB Distributed Database Platform
23 March 2022, InfoQ.com

HarperDB Releases HarperDB Cloud
22 April 2020, PR Newswire

Database Management Software Market Size, Trends and Forecast to 2029 | RingLead, MongoDB, Redis Enterprise, SingleStore.com, Teradata Vantage, SAP HANA, HarperDB, Couchbase Server, Worksheet Systems, Confluent Platform. – SMU Daily Musta
14 May 2022, SMU Daily Mustang

Build a Hacker News Clone using React and HarperDB
18 October 2021, SitePoint

HarperDB: An underdog SQL / NoSQL database
7 February 2018, ZDNet

provided by Google News

Job opportunities

Sales & Customer Success Engineer
HarperDB, Denver, CO

VP Engineering
HarperDB, Denver, CO

Cloud Platform Software Engineer
HarperDB, Denver, CO

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