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DBMS > FatDB vs. LokiJS vs. Oracle Coherence vs. SQL.JS

System Properties Comparison FatDB vs. LokiJS vs. Oracle Coherence vs. SQL.JS

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Editorial information provided by DB-Engines

Name

FatDB/FatCloud has ceased operations as a company with February 2014. FatDB is discontinued and excluded from the ranking.

Description

A .NET NoSQL DBMS that can integrate with and extend SQL Server.

In-memory JavaScript DBMS

Oracles in-memory data grid solution

Port of SQLite to JavaScript

Primary database model

Document store
Key-value store

Key-value store

Relational DBMS

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

Score	0.43
Rank	#264	Overall
	#42	Document stores

Score	1.92
Rank	#130	Overall
	#22	Key-value stores

Score	0.53
Rank	#252	Overall
	#116	Relational DBMS

Website

github.com/techfort/LokiJS

www.oracle.com/java/coherence

Technical documentation

techfort.github.io/LokiJS

docs.oracle.com/en/middleware/standalone/coherence

sql.js.org/documentation/index.html

Developer

FatCloud

Oracle

Alon Zakai

enhancements implemented by others

Initial release

2012

2014

2007

2012

Current release

14.1, August 2023

License

Commercial or Open Source

commercial

Open Source

commercial

Open Source

Cloud-based only

Only available as a cloud service

no

no

no

no

DBaaS offerings (sponsored links)

Database as a Service

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

Implementation language

C#

JavaScript

Java

JavaScript

Server operating systems

Windows

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

All OS with a Java VM

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

Data scheme

schema-free

schema-free

schema-free

yes

Typing

predefined data types such as float or date

yes

no

yes

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

Secondary indexes

yes

yes

via views

no

SQL

Support of SQL

no

Via inetgration in SQL Server

no

no

yes

SQL-92 is not fully supported

APIs and other access methods

.NET Client API
LINQ
RESTful HTTP API
RPC
Windows WCF Bindings

JavaScript API

JCache
JPA
RESTful HTTP API

JavaScript API

Supported programming languages

C#

JavaScript

.Net
C++
Java

JavaScript

Server-side scripts

Stored procedures

yes

via applications

View functions in JavaScript

no

no

Triggers

yes

via applications

yes

yes

Live Events

no

Partitioning methods

Methods for storing different data on different nodes

Sharding

none

Sharding

none

Replication methods

Methods for redundantly storing data on multiple nodes

selectable replication factor

none

yes, with selectable consistency level

none

MapReduce

Offers an API for user-defined Map/Reduce methods

yes

yes

no

no

Consistency concepts

Methods to ensure consistency in a distributed system

Eventual Consistency
Immediate Consistency

none

Eventual Consistency
Immediate Consistency

none

Foreign keys

Referential integrity

no

no

no

yes

Transaction concepts

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

no

no

atomic operations within a single collection possible

configurable

ACID

Concurrency

Support for concurrent manipulation of data

yes

yes

Durability

Support for making data persistent

yes

yes

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

yes

optionally

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

Can implement custom security layer via applications

no

authentification to access the cache via certificates or http basic authentication

no

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More resources

DB-Engines blog posts

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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