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DBMS > EJDB vs. LokiJS vs. Microsoft Azure AI Search vs. PouchDB

System Properties Comparison EJDB vs. LokiJS vs. Microsoft Azure AI Search vs. PouchDB

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Editorial information provided by DB-Engines
NameEJDB  Xexclude from comparisonLokiJS  Xexclude from comparisonMicrosoft Azure AI Search  Xexclude from comparisonPouchDB  Xexclude from comparison
DescriptionEmbeddable document-store database library with JSON representation of queries (in MongoDB style)In-memory JavaScript DBMSSearch-as-a-service for web and mobile app developmentJavaScript DBMS with an API inspired by CouchDB
Primary database modelDocument storeDocument storeSearch engineDocument store
Secondary database modelsVector DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.13
Rank#331  Overall
#46  Document stores
Score0.44
Rank#256  Overall
#40  Document stores
Score5.75
Rank#58  Overall
#7  Search engines
Score2.18
Rank#114  Overall
#21  Document stores
Websitegithub.com/­Softmotions/­ejdbgithub.com/­techfort/­LokiJSazure.microsoft.com/­en-us/­services/­searchpouchdb.com
Technical documentationgithub.com/­Softmotions/­ejdb/­blob/­master/­README.mdtechfort.github.io/­LokiJSlearn.microsoft.com/­en-us/­azure/­searchpouchdb.com/­guides
DeveloperSoftmotionsMicrosoftApache Software Foundation
Initial release2012201420152012
Current releaseV17.1.1, June 2019
License infoCommercial or Open SourceOpen Source infoGPLv2Open SourcecommercialOpen Source
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 languageCJavaScriptJavaScript
Server operating systemsserver-lessserver-less, requires a JavaScript environment (browser, Node.js)hostedserver-less, requires a JavaScript environment (browser, Node.js)
Data schemeschema-freeschema-freeyesschema-free
Typing infopredefined data types such as float or dateyes infostring, integer, double, bool, date, object_idnoyesno
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 indexesnoyes infovia viewsyesyes infovia views
SQL infoSupport of SQLnononono
APIs and other access methodsin-process shared libraryJavaScript APIRESTful HTTP APIHTTP REST infoonly for PouchDB Server
JavaScript API
Supported programming languagesActionscript
C
C#
C++
Go
Java
JavaScript (Node.js)
Lua
Objective-C
Pike
Python
Ruby
JavaScriptC#
Java
JavaScript
Python
JavaScript
Server-side scripts infoStored proceduresnoView functions in JavaScriptnoView functions in JavaScript
Triggersnoyesnoyes
Partitioning methods infoMethods for storing different data on different nodesnonenoneSharding infoImplicit feature of the cloud serviceSharding infowith a proxy-based framework, named couchdb-lounge
Replication methods infoMethods for redundantly storing data on multiple nodesnonenoneyes infoImplicit feature of the cloud serviceMulti-source replication infoalso with CouchDB databases
Source-replica replication infoalso with CouchDB databases
MapReduce infoOffers an API for user-defined Map/Reduce methodsnoyesnoyes
Consistency concepts infoMethods to ensure consistency in a distributed systemnoneImmediate ConsistencyEventual 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 datanono infoatomic operations within a single collection possiblenono
Concurrency infoSupport for concurrent manipulation of datayes infoRead/Write Lockingyes
Durability infoSupport for making data persistentyesyes infoSerialization of a DB in a Node.JS/Cordova/PhoneGap environment. Usage of the IndexedDB-API in a browser.yesyes 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.yesnoyes
User concepts infoAccess controlnonoyes infousing Azure authenticationno

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More resources
EJDBLokiJSMicrosoft Azure AI SearchPouchDB
DB-Engines blog posts

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