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DBMS > EJDB vs. Firebase Realtime Database vs. HyperSQL vs. LokiJS vs. SQL.JS

System Properties Comparison EJDB vs. Firebase Realtime Database vs. HyperSQL vs. LokiJS vs. SQL.JS

Editorial information provided by DB-Engines

Name

Description

Embeddable document-store database library with JSON representation of queries (in MongoDB style)

Cloud-hosted realtime document store. iOS, Android, and JavaScript clients share one Realtime Database instance and automatically receive updates with the newest data.

Multithreaded, transactional RDBMS written in Java

also known as HSQLDB

In-memory JavaScript DBMS

Port of SQLite to JavaScript

Primary database model

Relational DBMS

Relational DBMS

DB-Engines Ranking measures the popularity of database management systems
Trend Chart

Score	0.27
Rank	#297	Overall
	#44	Document stores

Score	14.29
Rank	#39	Overall
	#6	Document stores

Score	3.49
Rank	#87	Overall
	#47	Relational DBMS

Score	0.43
Rank	#264	Overall
	#42	Document stores

Score	0.53
Rank	#252	Overall
	#116	Relational DBMS

Website

github.com/Softmotions/ejdb

firebase.google.com/products/realtime-database

github.com/techfort/LokiJS

Technical documentation

github.com/Softmotions/ejdb/blob/master/README.md

firebase.google.com/docs/database

hsqldb.org/web/hsqlDocsFrame.html

techfort.github.io/LokiJS

sql.js.org/documentation/index.html

Developer

Softmotions

Google

acquired by Google 2014

Alon Zakai

enhancements implemented by others

Initial release

2012

2012

2001

2014

2012

Current release

2.7.2, June 2023

License

Commercial or Open Source

Open Source

GPLv2

commercial

Open Source

based on BSD license

Open Source

Open Source

Cloud-based only

Only available as a cloud service

no

yes

no

no

no

DBaaS offerings (sponsored links)

Database as a Service

Providers of DBaaS offerings, please contact us to be listed.

Implementation language

C

Java

JavaScript

JavaScript

Server operating systems

server-less

hosted

All OS with a Java VM

Embedded (into Java applications) and Client-Server operating modes

server-less, requires a JavaScript environment (browser, Node.js)

server-less, requires a JavaScript environment (browser, Node.js)

Data scheme

schema-free

schema-free

yes

schema-free

yes

Typing

predefined data types such as float or date

yes

string, integer, double, bool, date, object_id

yes

yes

no

yes

XML support

Some form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.

no

no

no

no

Secondary indexes

no

yes

yes

yes

via views

SQL

Support of SQL

no

no

yes

no

yes

SQL-92 is not fully supported

APIs and other access methods

in-process shared library

Android
iOS
JavaScript API
RESTful HTTP API

HTTP API

JDBC via HTTP
JDBC
ODBC

JavaScript API

JavaScript API

Supported programming languages

Actionscript
C
C#
C++
Go
Java
JavaScript (Node.js)
Lua
Objective-C
Pike
Python
Ruby

Java
JavaScript
Objective-C

All languages supporting JDBC/ODBC
Java

JavaScript

JavaScript

Server-side scripts

Stored procedures

no

limited functionality with using 'rules'

Java, SQL

View functions in JavaScript

no

Triggers

no

Callbacks are triggered when data changes

yes

yes

no

Partitioning methods

Methods for storing different data on different nodes

none

none

none

none

Replication methods

Methods for redundantly storing data on multiple nodes

none

none

none

none

MapReduce

Offers an API for user-defined Map/Reduce methods

no

no

no

yes

no

Consistency concepts

Methods to ensure consistency in a distributed system

Eventual Consistency

if the client is offline
Immediate Consistency

if the client is online

Immediate Consistency

none

none

Foreign keys

Referential integrity

no

typically not needed, however similar functionality with collection joins possible

no

yes

no

yes

Transaction concepts

Support to ensure data integrity after non-atomic manipulations of data

no

yes

ACID

no

atomic operations within a single collection possible

ACID

Concurrency

Support for concurrent manipulation of data

yes

Read/Write Locking

yes

yes

Durability

Support for making data persistent

yes

yes

yes

yes

Serialization of a DB in a Node.JS/Cordova/PhoneGap environment. Usage of the IndexedDB-API in a browser.

no

except by serializing a db to a file

In-memory capabilities

Is there an option to define some or all structures to be held in-memory only.

yes

yes

yes

User concepts

Access control

no

yes, based on authentication and database rules

fine grained access rights according to SQL-standard

no

no

More information provided by the system vendor

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Related products and services

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More resources

DB-Engines blog posts

Cloud-based DBMS's popularity grows at high rates
12 December 2019, Paul Andlinger

New kids on the block: database management systems implemented in JavaScript
1 December 2014, Matthias Gelbmann

New kids on the block: database management systems implemented in JavaScript
1 December 2014, Matthias Gelbmann

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