DBMS > Alibaba Cloud AnalyticDB for PostgreSQL vs. Stardog vs. Ultipa vs. VelocityDB

System Properties Comparison Alibaba Cloud AnalyticDB for PostgreSQL vs. Stardog vs. Ultipa vs. VelocityDB

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Name	Alibaba Cloud AnalyticDB for PostgreSQL former name was HybridDB  Xexclude from comparison	Stardog  Xexclude from comparison	Ultipa  Xexclude from comparison	VelocityDB  Xexclude from comparison
Description	An online MPP (Massively Parallel Processing) data warehousing service based on Greenplum	Enterprise Knowledge Graph platform and graph DBMS with high availability, high performance reasoning, and virtualization	High performance Graph DBMS supporting HTAP high availability cluster deployment	A .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database model	Relational DBMS	Graph DBMS RDF store	Graph DBMS	Graph DBMS Object oriented DBMS
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 0.76 Rank #220   Overall #102   Relational DBMS	Score 2.07 Rank #122   Overall #11   Graph DBMS #6   RDF stores	Score 0.19 Rank #330   Overall #30   Graph DBMS	Score 0.11 Rank #354   Overall #37   Graph DBMS #15   Object oriented DBMS
Website	www.alibabacloud.com/­product/­hybriddb-postgresql	www.stardog.com	www.ultipa.com	velocitydb.com
Technical documentation	www.alibabacloud.com/­help/­en/­analyticdb-for-postgresql/­latest/­product-introduction-overview	docs.stardog.com	www.ultipa.com/­document	velocitydb.com/­UserGuide
Developer	Alibaba / Pivotal Software Inc. / PostgreSQL Global Development Group	Stardog-Union	Ultipa	VelocityDB Inc
Initial release	2016	2010	2019	2011
Current release		7.3.0, May 2020		7.x
License Commercial or Open Source	commercial	commercial 60-day fully-featured trial license; 1-year fully-featured non-commercial use license for academics/students	commercial	commercial
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		Java		C#
Server operating systems	hosted	Linux macOS Windows		Any that supports .NET
Data scheme	yes	schema-free and OWL/RDFS-schema support		yes
Typing predefined data types such as float or date	yes	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.	yes	no Import/export of XML data possible		no
Secondary indexes	yes	yes supports real-time indexing in full-text and geospatial		yes
SQL Support of SQL	yes	Yes, compatible with all major SQL variants through dedicated BI/SQL Server		no
APIs and other access methods	JDBC ODBC	GraphQL query language HTTP API Jena RDF API OWL RDF4J API Sesame REST HTTP Protocol SNARL SPARQL Spring Data Stardog Studio TinkerPop 3	RESTful HTTP API	.Net
Supported programming languages	C Java Perl Python R	.Net Clojure Groovy Java JavaScript Python Ruby	C++ Go Java JavaScript (Node.js) Python	.Net
Server-side scripts Stored procedures	yes	user defined functions and aggregates, HTTP Server extensions in Java		no
Triggers	yes	yes via event handlers		Callbacks are triggered when data changes
Partitioning methods Methods for storing different data on different nodes	Sharding Implicit feature of the cloud service	none		Sharding
Replication methods Methods for redundantly storing data on multiple nodes	yes Implicit feature of the cloud service	Multi-source replication in HA-Cluster
MapReduce Offers an API for user-defined Map/Reduce methods	no	no		no
Consistency concepts Methods to ensure consistency in a distributed system	Immediate Consistency	Immediate Consistency in HA-Cluster		Immediate Consistency
Foreign keys Referential integrity	yes	yes relationships in graphs		no
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	ACID	ACID		ACID
Concurrency Support for concurrent manipulation of data	yes	yes		yes
Durability Support for making data persistent	yes	yes		yes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.	no	yes		yes
User concepts Access control	fine grained access rights according to SQL-standard	Access rights for users and roles		Based on Windows Authentication
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More resources
	Alibaba Cloud AnalyticDB for PostgreSQL former name was HybridDB	Stardog	Ultipa	VelocityDB
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 How Data Analytics Capabilities of Alibaba Group Evolve Its Ecosystem to the Cloud 20 February 2021, DataDrivenInvestor provided by Google News		High-performance computing's role in real-time graph analytics - DataScienceCentral.com 30 January 2024, Data Science Central provided by Google News

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