DBMS > 4D vs. Alibaba Cloud AnalyticDB for PostgreSQL vs. LokiJS vs. Postgres-XL

System Properties Comparison 4D vs. Alibaba Cloud AnalyticDB for PostgreSQL vs. LokiJS vs. Postgres-XL

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Editorial information provided by DB-Engines
Name	4D former name: 4th Dimension  Xexclude from comparison	Alibaba Cloud AnalyticDB for PostgreSQL former name was HybridDB  Xexclude from comparison	LokiJS  Xexclude from comparison	Postgres-XL  Xexclude from comparison
Description	Application development environment with integrated database management system	An online MPP (Massively Parallel Processing) data warehousing service based on Greenplum	In-memory JavaScript DBMS	Based on PostgreSQL enhanced with MPP and write-scale-out cluster features
Primary database model	Relational DBMS	Relational DBMS	Document store	Relational DBMS
Secondary database models				Document store Spatial DBMS
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 2.47 Rank #110   Overall #54   Relational DBMS	Score 0.76 Rank #220   Overall #102   Relational DBMS	Score 0.49 Rank #260   Overall #42   Document stores	Score 0.53 Rank #254   Overall #117   Relational DBMS
Website	www.4d.com	www.alibabacloud.com/­product/­hybriddb-postgresql	github.com/­techfort/­LokiJS	www.postgres-xl.org
Technical documentation	developer.4d.com	www.alibabacloud.com/­help/­en/­analyticdb-for-postgresql/­latest/­product-introduction-overview	techfort.github.io/­LokiJS	www.postgres-xl.org/­documentation
Developer	4D, Inc	Alibaba / Pivotal Software Inc. / PostgreSQL Global Development Group
Initial release	1984	2016	2014	2014 since 2012, originally named StormDB
Current release	v20, April 2023			10 R1, October 2018
License Commercial or Open Source	commercial	commercial	Open Source	Open Source Mozilla public license
Cloud-based only Only available as a cloud service	no	yes	no	no
DBaaS offerings (sponsored links) Database as a Service Providers of DBaaS offerings, please contact us to be listed.
Implementation language			JavaScript	C
Server operating systems	OS X Windows	hosted	server-less, requires a JavaScript environment (browser, Node.js)	Linux macOS
Data scheme	yes	yes	schema-free	yes
Typing predefined data types such as float or date	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.	yes	yes	no	yes XML type, but no XML query functionality
Secondary indexes	yes	yes	yes via views	yes
SQL Support of SQL	yes close to SQL 92	yes	no	yes distributed, parallel query execution
APIs and other access methods	ODBC RESTful HTTP API by using 4D Mobile SOAP webservices	JDBC ODBC	JavaScript API	ADO.NET JDBC native C library ODBC streaming API for large objects
Supported programming languages	4D proprietary IDE PHP	C Java Perl Python R	JavaScript	.Net C C++ Delphi Erlang Java JavaScript (Node.js) Perl PHP Python Tcl
Server-side scripts Stored procedures	yes	yes	View functions in JavaScript	user defined functions
Triggers	yes	yes	yes	yes
Partitioning methods Methods for storing different data on different nodes	none	Sharding Implicit feature of the cloud service	none	horizontal partitioning
Replication methods Methods for redundantly storing data on multiple nodes	Multi-source replication	yes Implicit feature of the cloud service	none
MapReduce Offers an API for user-defined Map/Reduce methods	no	no	yes	no
Consistency concepts Methods to ensure consistency in a distributed system	Immediate Consistency	Immediate Consistency	none	Immediate Consistency
Foreign keys Referential integrity	yes	yes	no	yes
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	ACID	ACID	no atomic operations within a single collection possible	ACID MVCC
Concurrency Support for concurrent manipulation of data	yes	yes		yes
Durability Support for making data persistent	yes	yes	yes Serialization of a DB in a Node.JS/Cordova/PhoneGap environment. Usage of the IndexedDB-API in a browser.	yes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.	no	no	yes	no
User concepts Access control	Users and groups	fine grained access rights according to SQL-standard	no	fine grained access rights according to SQL-standard
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More resources
	4D former name: 4th Dimension	Alibaba Cloud AnalyticDB for PostgreSQL former name was HybridDB	LokiJS	Postgres-XL
DB-Engines blog posts	MySQL, PostgreSQL and Redis are the winners of the March ranking 2 March 2016, Paul Andlinger show all		New kids on the block: database management systems implemented in JavaScript 1 December 2014, Matthias Gelbmann show all
Recent citations in the news		Alibaba Cloud upgrades AnalyticDB with vector database engine 25 July 2023, CloudTech News Two Critical Flaws Found in Alibaba Cloud's PostgreSQL Databases 20 April 2023, The Hacker News Accidental ‘write’ Permissions In Alibaba PostgreSQL Let Attackers Access Sensitive Data 22 April 2023, GBHackers Two critical vulnerabilities spotted in Alibaba Cloud's PostgreSQL databases 21 April 2023, TEISS Alibaba Cloud ignites AI innovation in Singapore with recent hackathon | KrASIA 27 March 2024, KrASIA provided by Google News	LokiJS - A JavaScript Database 18 November 2014, iProgrammer provided by Google News

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