DBMS > Alibaba Cloud AnalyticDB for PostgreSQL vs. EJDB vs. SAP Advantage Database Server vs. SiteWhere vs. Stardog

System Properties Comparison Alibaba Cloud AnalyticDB for PostgreSQL vs. EJDB vs. SAP Advantage Database Server vs. SiteWhere vs. Stardog

Editorial information provided by DB-Engines
Name	Alibaba Cloud AnalyticDB for PostgreSQL former name was HybridDB  Xexclude from comparison	EJDB  Xexclude from comparison	SAP Advantage Database Server former name: Sybase ADS  Xexclude from comparison	SiteWhere  Xexclude from comparison	Stardog  Xexclude from comparison
			SAP Advantage Database Server seems to be discontinued. Therefore it is excluded from the DB-Engines Ranking.
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)	Low-cost RDBMS with access to ISAM and FoxPro data structures	M2M integration platform for persisting/querying time series data	Enterprise Knowledge Graph platform and graph DBMS with high availability, high performance reasoning, and virtualization
Primary database model	Relational DBMS	Document store	Relational DBMS	Time Series DBMS	Graph DBMS RDF store
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 0.06 Rank #383   Overall #43   Time Series DBMS	Score 2.07 Rank #122   Overall #11   Graph DBMS #6   RDF stores
Website	www.alibabacloud.com/­product/­hybriddb-postgresql	github.com/­Softmotions/­ejdb	www.sap.com/products/advantage-database-server.html	github.com/­sitewhere/­sitewhere	www.stardog.com
Technical documentation	www.alibabacloud.com/­help/­en/­analyticdb-for-postgresql/­latest/­product-introduction-overview	github.com/­Softmotions/­ejdb/­blob/­master/­README.md		sitewhere1.sitewhere.io/­index.html	docs.stardog.com
Developer	Alibaba / Pivotal Software Inc. / PostgreSQL Global Development Group	Softmotions	Sybase, SAP	SiteWhere	Stardog-Union
Initial release	2016	2012	1993	2010	2010
Current release					7.3.0, May 2020
License Commercial or Open Source	commercial	Open Source GPLv2	commercial	Open Source Common Public Attribution License Version 1.0	commercial 60-day fully-featured trial license; 1-year fully-featured non-commercial use license for academics/students
Cloud-based only Only available as a cloud service	yes	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		Java	Java
Server operating systems	hosted	server-less	Linux Windows	Linux OS X Windows	Linux macOS Windows
Data scheme	yes	schema-free	yes	predefined scheme	schema-free and OWL/RDFS-schema support
Typing predefined data types such as float or date	yes	yes string, integer, double, bool, date, object_id	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	no	no Import/export of XML data possible
Secondary indexes	yes	no	yes	no	yes supports real-time indexing in full-text and geospatial
SQL Support of SQL	yes	no	yes	no	Yes, compatible with all major SQL variants through dedicated BI/SQL Server
APIs and other access methods	JDBC ODBC	in-process shared library	.NET Client API ADO.NET JDBC ODBC OLE DB	HTTP REST	GraphQL query language HTTP API Jena RDF API OWL RDF4J API Sesame REST HTTP Protocol SNARL SPARQL Spring Data Stardog Studio TinkerPop 3
Supported programming languages	C Java Perl Python R	Actionscript C C# C++ Go Java JavaScript (Node.js) Lua Objective-C Pike Python Ruby	Delphi Perl PHP		.Net Clojure Groovy Java JavaScript Python Ruby
Server-side scripts Stored procedures	yes	no	yes		user defined functions and aggregates, HTTP Server extensions in Java
Triggers	yes	no	yes		yes via event handlers
Partitioning methods Methods for storing different data on different nodes	Sharding Implicit feature of the cloud service	none	none	Sharding based on HBase	none
Replication methods Methods for redundantly storing data on multiple nodes	yes Implicit feature of the cloud service	none	Multi-source replication CONFLICT Trigger to resolve replication conflicts Source-replica replication	selectable replication factor based on HBase	Multi-source replication in HA-Cluster
MapReduce Offers an API for user-defined Map/Reduce methods	no	no	no	no	no
Consistency concepts Methods to ensure consistency in a distributed system	Immediate Consistency		Immediate Consistency	Immediate Consistency	Immediate Consistency in HA-Cluster
Foreign keys Referential integrity	yes	no typically not needed, however similar functionality with collection joins possible	yes	no	yes relationships in graphs
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	ACID	no	ACID	no	ACID
Concurrency Support for concurrent manipulation of data	yes	yes Read/Write Locking	yes	yes	yes
Durability Support for making data persistent	yes	yes	yes	yes	yes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.	no		no caching of (temporary) tables can be configured	no	yes
User concepts Access control	fine grained access rights according to SQL-standard	no	fine grained access rights according to SQL-standard	Users with fine-grained authorization concept	Access rights for users and roles
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More resources
	Alibaba Cloud AnalyticDB for PostgreSQL former name was HybridDB	EJDB	SAP Advantage Database Server former name: Sybase ADS	SiteWhere	Stardog
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		SAP Announces Q3 2023 Results: Asia Pacific and Japan View 19 October 2023, SAP News provided by Google News	SiteWhere: An open platform for connected devices 11 July 2017, Open Source For You 11 Best Open source IoT Platforms To Develop Smart Projects 9 March 2023, H2S Media provided by Google News

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