DBMS > Alibaba Cloud AnalyticDB for PostgreSQL vs. Postgres-XL vs. Sadas Engine vs. searchxml

System Properties Comparison Alibaba Cloud AnalyticDB for PostgreSQL vs. Postgres-XL vs. Sadas Engine vs. searchxml

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Name	Alibaba Cloud AnalyticDB for PostgreSQL former name was HybridDB  Xexclude from comparison	Postgres-XL  Xexclude from comparison	Sadas Engine  Xexclude from comparison	searchxml  Xexclude from comparison
Description	An online MPP (Massively Parallel Processing) data warehousing service based on Greenplum	Based on PostgreSQL enhanced with MPP and write-scale-out cluster features	SADAS Engine is a columnar DBMS specifically designed for high performance in data warehouse environments	DBMS for structured and unstructured content wrapped with an application server
Primary database model	Relational DBMS	Relational DBMS	Relational DBMS	Native XML DBMS Search engine
Secondary database models		Document store Spatial DBMS
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 0.76 Rank #220   Overall #102   Relational DBMS	Score 0.53 Rank #254   Overall #117   Relational DBMS	Score 0.07 Rank #373   Overall #157   Relational DBMS	Score 0.03 Rank #390   Overall #7   Native XML DBMS #24   Search engines
Website	www.alibabacloud.com/­product/­hybriddb-postgresql	www.postgres-xl.org	www.sadasengine.com	www.searchxml.net/­category/­products
Technical documentation	www.alibabacloud.com/­help/­en/­analyticdb-for-postgresql/­latest/­product-introduction-overview	www.postgres-xl.org/­documentation	www.sadasengine.com/­en/­sadas-engine-download-free-trial-and-documentation/­#documentation	www.searchxml.net/­support/­handouts
Developer	Alibaba / Pivotal Software Inc. / PostgreSQL Global Development Group		SADAS s.r.l.	informationpartners gmbh
Initial release	2016	2014 since 2012, originally named StormDB	2006	2015
Current release		10 R1, October 2018	8.0	1.0
License Commercial or Open Source	commercial	Open Source Mozilla public license	commercial free trial version available	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		C	C++	C++
Server operating systems	hosted	Linux macOS	AIX Linux Windows	Windows
Data scheme	yes	yes	yes	schema-free
Typing predefined data types such as float or date	yes	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	yes XML type, but no XML query functionality	no	yes
Secondary indexes	yes	yes	yes	yes
SQL Support of SQL	yes	yes distributed, parallel query execution	yes	no
APIs and other access methods	JDBC ODBC	ADO.NET JDBC native C library ODBC streaming API for large objects	JDBC ODBC Proprietary protocol	RESTful HTTP API WebDAV XQuery XSLT
Supported programming languages	C Java Perl Python R	.Net C C++ Delphi Erlang Java JavaScript (Node.js) Perl PHP Python Tcl	.Net C C# C++ Groovy Java PHP Python	C++ most other programming languages supported via APIs
Server-side scripts Stored procedures	yes	user defined functions	no	yes on the application server
Triggers	yes	yes	no	no
Partitioning methods Methods for storing different data on different nodes	Sharding Implicit feature of the cloud service	horizontal partitioning	horizontal partitioning	none
Replication methods Methods for redundantly storing data on multiple nodes	yes Implicit feature of the cloud service		none	yes sychronisation to multiple collections
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	Immediate Consistency	Immediate Consistency
Foreign keys Referential integrity	yes	yes	yes	no
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	ACID	ACID MVCC		multiple readers, single writer
Concurrency Support for concurrent manipulation of data	yes	yes	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	no	yes managed by 'Learn by Usage'	no
User concepts Access control	fine grained access rights according to SQL-standard	fine grained access rights according to SQL-standard	Access rights for users, groups and roles according to SQL-standard	Domain, group and role-based access control at the document level and for application services
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More resources
	Alibaba Cloud AnalyticDB for PostgreSQL former name was HybridDB	Postgres-XL	Sadas Engine	searchxml
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

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