DBMS > Alibaba Cloud AnalyticDB for PostgreSQL vs. chDB vs. Microsoft Azure Data Explorer vs. Sadas Engine

System Properties Comparison Alibaba Cloud AnalyticDB for PostgreSQL vs. chDB vs. Microsoft Azure Data Explorer vs. Sadas Engine

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Name	Alibaba Cloud AnalyticDB for PostgreSQL former name was HybridDB  Xexclude from comparison	chDB  Xexclude from comparison	Microsoft Azure Data Explorer  Xexclude from comparison	Sadas Engine  Xexclude from comparison
Description	An online MPP (Massively Parallel Processing) data warehousing service based on Greenplum	An embedded SQL OLAP Engine powered by ClickHouse	Fully managed big data interactive analytics platform	SADAS Engine is a columnar DBMS specifically designed for high performance in data warehouse environments
Primary database model	Relational DBMS	Relational DBMS	Relational DBMS column oriented	Relational DBMS
Secondary database models		Time Series DBMS	Document store If a column is of type dynamic docs.microsoft.com/­en-us/­azure/­kusto/­query/­scalar-data-types/­dynamic then it's possible to add arbitrary JSON documents in this cell Event Store this is the general usage pattern at Microsoft. Billing, Logs, Telemetry events are stored in ADX and the state of an individual entity is defined by the arg_max(timestamps) Spatial DBMS Search engine support for complex search expressions docs.microsoft.com/­en-us/­azure/­kusto/­query/­parseoperator FTS, Geospatial docs.microsoft.com/­en-us/­azure/­kusto/­query/­geo-point-to-geohash-function distributed search -> ADX acts as a distributed search engine Time Series DBMS see docs.microsoft.com/­en-us/­azure/­data-explorer/­time-series-analysis
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 0.76 Rank #220   Overall #102   Relational DBMS	Score 0.07 Rank #376   Overall #158   Relational DBMS	Score 3.80 Rank #81   Overall #43   Relational DBMS	Score 0.07 Rank #373   Overall #157   Relational DBMS
Website	www.alibabacloud.com/­product/­hybriddb-postgresql	github.com/­chdb-io/­chdb	azure.microsoft.com/­services/­data-explorer	www.sadasengine.com
Technical documentation	www.alibabacloud.com/­help/­en/­analyticdb-for-postgresql/­latest/­product-introduction-overview	doc.chdb.io	docs.microsoft.com/­en-us/­azure/­data-explorer	www.sadasengine.com/­en/­sadas-engine-download-free-trial-and-documentation/­#documentation
Developer	Alibaba / Pivotal Software Inc. / PostgreSQL Global Development Group		Microsoft	SADAS s.r.l.
Initial release	2016	2023	2019	2006
Current release			cloud service with continuous releases	8.0
License Commercial or Open Source	commercial	Open Source Apache Version 2.0	commercial	commercial free trial version available
Cloud-based only Only available as a cloud service	yes	no	yes	no
DBaaS offerings (sponsored links) Database as a Service Providers of DBaaS offerings, please contact us to be listed.
Implementation language				C++
Server operating systems	hosted	server-less	hosted	AIX Linux Windows
Data scheme	yes		Fixed schema with schema-less datatypes (dynamic)	yes
Typing predefined data types such as float or date	yes		yes bool, datetime, dynamic, guid, int, long, real, string, timespan, double: docs.microsoft.com/­en-us/­azure/­kusto/­query/­scalar-data-types	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
Secondary indexes	yes		all fields are automatically indexed	yes
SQL Support of SQL	yes	Close to ANSI SQL (SQL/JSON + extensions)	Kusto Query Language (KQL), SQL subset	yes
APIs and other access methods	JDBC ODBC		Microsoft SQL Server communication protocol (MS-TDS) RESTful HTTP API	JDBC ODBC Proprietary protocol
Supported programming languages	C Java Perl Python R	Bun C C++ Go JavaScript (Node.js) Python Rust	.Net Go Java JavaScript (Node.js) PowerShell Python R	.Net C C# C++ Groovy Java PHP Python
Server-side scripts Stored procedures	yes		Yes, possible languages: KQL, Python, R	no
Triggers	yes		yes see docs.microsoft.com/­en-us/­azure/­kusto/­management/­updatepolicy	no
Partitioning methods Methods for storing different data on different nodes	Sharding Implicit feature of the cloud service		Sharding Implicit feature of the cloud service	horizontal partitioning
Replication methods Methods for redundantly storing data on multiple nodes	yes Implicit feature of the cloud service		yes Implicit feature of the cloud service. Replication either local, cross-facility or geo-redundant.	none
MapReduce Offers an API for user-defined Map/Reduce methods	no		Spark connector (open source): github.com/­Azure/­azure-kusto-spark	no
Consistency concepts Methods to ensure consistency in a distributed system	Immediate Consistency		Eventual Consistency Immediate Consistency	Immediate Consistency
Foreign keys Referential integrity	yes		no	yes
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	ACID		no
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		no	yes managed by 'Learn by Usage'
User concepts Access control	fine grained access rights according to SQL-standard		Azure Active Directory Authentication	Access rights for users, groups and roles according to SQL-standard
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More resources
	Alibaba Cloud AnalyticDB for PostgreSQL former name was HybridDB	chDB	Microsoft Azure Data Explorer	Sadas Engine
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 How Data Analytics Capabilities of Alibaba Group Evolve Its Ecosystem to the Cloud 20 February 2021, DataDrivenInvestor provided by Google News		We’re retiring Azure Time Series Insights on 7 July 2024 – transition to Azure Data Explorer | Azure updates 31 May 2024, Microsoft Update records in a Kusto Database (public preview) | Azure updates 20 February 2024, Microsoft Public Preview: Azure Data Explorer connector for Apache Flink | Azure updates 8 January 2024, Microsoft Announcing General Availability to migrate Virtual Network injected Azure Data Explorer Cluster to Private Endpoints ... 5 February 2024, Microsoft Migration of Azure Virtual Network injected Azure Data Explorer cluster to Private Endpoints | Azure updates 4 December 2023, Microsoft provided by Google News

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