DBMS > Alibaba Cloud AnalyticDB for PostgreSQL vs. EJDB vs. openGemini vs. PostGIS

System Properties Comparison Alibaba Cloud AnalyticDB for PostgreSQL vs. EJDB vs. openGemini vs. PostGIS

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Editorial information provided by DB-Engines
Name	Alibaba Cloud AnalyticDB for PostgreSQL former name was HybridDB  Xexclude from comparison	EJDB  Xexclude from comparison	openGemini  Xexclude from comparison	PostGIS  Xexclude from comparison
Description	An online MPP (Massively Parallel Processing) data warehousing service based on Greenplum	Embeddable document-store database library with JSON representation of queries (in MongoDB style)	An open source distributed Time Series DBMS with high concurrency, high performance, and high scalability	Spatial extension of PostgreSQL
Primary database model	Relational DBMS	Document store	Time Series DBMS	Spatial DBMS
Secondary database models				Relational DBMS
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 0.76 Rank #220   Overall #102   Relational DBMS	Score 0.31 Rank #296   Overall #44   Document stores	Score 0.09 Rank #361   Overall #37   Time Series DBMS	Score 21.72 Rank #29   Overall #1   Spatial DBMS
Website	www.alibabacloud.com/­product/­hybriddb-postgresql	github.com/­Softmotions/­ejdb	www.opengemini.org github.com/­openGemini	postgis.net
Technical documentation	www.alibabacloud.com/­help/­en/­analyticdb-for-postgresql/­latest/­product-introduction-overview	github.com/­Softmotions/­ejdb/­blob/­master/­README.md	docs.opengemini.org/­guide	postgis.net/­documentation
Developer	Alibaba / Pivotal Software Inc. / PostgreSQL Global Development Group	Softmotions	Huawei and openGemini community
Initial release	2016	2012	2022	2005
Current release			1.1, July 2023	3.4.2, February 2024
License Commercial or Open Source	commercial	Open Source GPLv2	Open Source Apache Version 2.0	Open Source GPL v2.0
Cloud-based only Only available as a cloud service	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	Go	C
Server operating systems	hosted	server-less	Linux Windows
Data scheme	yes	schema-free	schema-free	yes
Typing predefined data types such as float or date	yes	yes string, integer, double, bool, date, object_id	Integer, Float, Boolean, String	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		no	yes
Secondary indexes	yes	no	yes	yes
SQL Support of SQL	yes	no	SQL-like query language	yes
APIs and other access methods	JDBC ODBC	in-process shared library	HTTP REST
Supported programming languages	C Java Perl Python R	Actionscript C C# C++ Go Java JavaScript (Node.js) Lua Objective-C Pike Python Ruby	C C++ Go Java JavaScript (Node.js) Python Rust
Server-side scripts Stored procedures	yes	no	no	user defined functions
Triggers	yes	no	no	yes
Partitioning methods Methods for storing different data on different nodes	Sharding Implicit feature of the cloud service	none	Sharding	yes based on PostgreSQL
Replication methods Methods for redundantly storing data on multiple nodes	yes Implicit feature of the cloud service	none	yes	yes based on PostgreSQL
MapReduce Offers an API for user-defined Map/Reduce methods	no	no	no	no
Consistency concepts Methods to ensure consistency in a distributed system	Immediate Consistency			Immediate Consistency
Foreign keys Referential integrity	yes	no typically not needed, however similar functionality with collection joins possible	no	yes
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	ACID	no	no	ACID
Concurrency Support for concurrent manipulation of data	yes	yes Read/Write Locking	yes	yes
Durability Support for making data persistent	yes	yes	yes	yes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.	no		yes	no
User concepts Access control	fine grained access rights according to SQL-standard	no	Administrators and common users accounts	yes based on PostgreSQL
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More resources
	Alibaba Cloud AnalyticDB for PostgreSQL former name was HybridDB	EJDB	openGemini	PostGIS
DB-Engines blog posts				Spatial database management systems 6 April 2021, Matthias Gelbmann show all
Recent citations in the 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 to spur AI innovation with upcoming Singapore hackathon in March | KrASIA 21 February 2024, KrASIA Experts disclosed two critical flaws in Alibaba cloud database services 20 April 2023, Security Affairs provided by Google News		About HUAWEI Open Source 9 February 2022, Huawei provided by Google News

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