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DBMS > EJDB vs. Newts vs. OpenTSDB vs. PouchDB

System Properties Comparison EJDB vs. Newts vs. OpenTSDB vs. PouchDB

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Editorial information provided by DB-Engines
NameEJDB  Xexclude from comparisonNewts  Xexclude from comparisonOpenTSDB  Xexclude from comparisonPouchDB  Xexclude from comparison
DescriptionEmbeddable document-store database library with JSON representation of queries (in MongoDB style)Time Series DBMS based on CassandraScalable Time Series DBMS based on HBaseJavaScript DBMS with an API inspired by CouchDB
Primary database modelDocument storeTime Series DBMSTime Series DBMSDocument store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.13
Rank#331  Overall
#46  Document stores
Score0.00
Rank#385  Overall
#40  Time Series DBMS
Score1.59
Rank#140  Overall
#12  Time Series DBMS
Score2.18
Rank#114  Overall
#21  Document stores
Websitegithub.com/­Softmotions/­ejdbopennms.github.io/­newtsopentsdb.netpouchdb.com
Technical documentationgithub.com/­Softmotions/­ejdb/­blob/­master/­README.mdgithub.com/­OpenNMS/­newts/­wikiopentsdb.net/­docs/­build/­html/­index.htmlpouchdb.com/­guides
DeveloperSoftmotionsOpenNMS Groupcurrently maintained by Yahoo and other contributorsApache Software Foundation
Initial release2012201420112012
Current release7.1.1, June 2019
License infoCommercial or Open SourceOpen Source infoGPLv2Open Source infoApache 2.0Open Source infoLGPLOpen Source
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageCJavaJavaJavaScript
Server operating systemsserver-lessLinux
OS X
Windows
Linux
Windows
server-less, requires a JavaScript environment (browser, Node.js)
Data schemeschema-freeschema-freeschema-freeschema-free
Typing infopredefined data types such as float or dateyes infostring, integer, double, bool, date, object_idyesnumeric data for metrics, strings for tagsno
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 indexesnononoyes infovia views
SQL infoSupport of SQLnononono
APIs and other access methodsin-process shared libraryHTTP REST
Java API
HTTP API
Telnet API
HTTP REST infoonly for PouchDB Server
JavaScript API
Supported programming languagesActionscript
C
C#
C++
Go
Java
JavaScript (Node.js)
Lua
Objective-C
Pike
Python
Ruby
JavaErlang
Go
Java
Python
R
Ruby
JavaScript
Server-side scripts infoStored proceduresnononoView functions in JavaScript
Triggersnononoyes
Partitioning methods infoMethods for storing different data on different nodesnoneSharding infobased on CassandraSharding infobased on HBaseSharding infowith a proxy-based framework, named couchdb-lounge
Replication methods infoMethods for redundantly storing data on multiple nodesnoneselectable replication factor infobased on Cassandraselectable replication factor infobased on HBaseMulti-source replication infoalso with CouchDB databases
Source-replica replication infoalso with CouchDB databases
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononoyes
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency infobased on Cassandra
Immediate Consistency infobased on Cassandra
Immediate Consistency infobased on HBaseEventual Consistency
Foreign keys infoReferential integrityno infotypically not needed, however similar functionality with collection joins possiblenonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanononono
Concurrency infoSupport for concurrent manipulation of datayes infoRead/Write Lockingyesyes
Durability infoSupport for making data persistentyesyesyesyes infoby using IndexedDB, WebSQL or LevelDB as backend
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.nonoyes
User concepts infoAccess controlnononono

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More resources
EJDBNewtsOpenTSDBPouchDB
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