DBMS > FatDB vs. Machbase Neo vs. Microsoft Azure Data Explorer vs. Postgres-XL

System Properties Comparison FatDB vs. Machbase Neo vs. Microsoft Azure Data Explorer vs. Postgres-XL

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Editorial information provided by DB-Engines
Name	FatDB  Xexclude from comparison	Machbase Neo Former name was Infiniflux  Xexclude from comparison	Microsoft Azure Data Explorer  Xexclude from comparison	Postgres-XL  Xexclude from comparison
	FatDB/FatCloud has ceased operations as a company with February 2014. FatDB is discontinued and excluded from the ranking.
Description	A .NET NoSQL DBMS that can integrate with and extend SQL Server.	TimeSeries DBMS for AIoT and BigData	Fully managed big data interactive analytics platform	Based on PostgreSQL enhanced with MPP and write-scale-out cluster features
Primary database model	Document store Key-value store	Time Series DBMS	Relational DBMS column oriented	Relational DBMS
Secondary database models			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	Document store Spatial DBMS
DB-Engines Ranking measures the popularity of database management systems Trend Chart		Score 0.17 Rank #337   Overall #30   Time Series DBMS	Score 3.80 Rank #81   Overall #43   Relational DBMS	Score 0.53 Rank #254   Overall #117   Relational DBMS
Website		machbase.com	azure.microsoft.com/­services/­data-explorer	www.postgres-xl.org
Technical documentation		machbase.com/­dbms	docs.microsoft.com/­en-us/­azure/­data-explorer	www.postgres-xl.org/­documentation
Developer	FatCloud	Machbase	Microsoft
Initial release	2012	2013	2019	2014 since 2012, originally named StormDB
Current release		V8.0, August 2023	cloud service with continuous releases	10 R1, October 2018
License Commercial or Open Source	commercial	commercial free test version available	commercial	Open Source Mozilla public license
Cloud-based only Only available as a cloud service	no	no	yes	no
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Implementation language	C#	C		C
Server operating systems	Windows	Linux macOS Windows	hosted	Linux macOS
Data scheme	schema-free	yes	Fixed schema with schema-less datatypes (dynamic)	yes
Typing predefined data types such as float or date	yes	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.		no	yes	yes XML type, but no XML query functionality
Secondary indexes	yes	yes	all fields are automatically indexed	yes
SQL Support of SQL	no Via inetgration in SQL Server	SQL-like query language	Kusto Query Language (KQL), SQL subset	yes distributed, parallel query execution
APIs and other access methods	.NET Client API LINQ RESTful HTTP API RPC Windows WCF Bindings	gRPC HTTP REST JDBC MQTT (Message Queue Telemetry Transport) ODBC	Microsoft SQL Server communication protocol (MS-TDS) RESTful HTTP API	ADO.NET JDBC native C library ODBC streaming API for large objects
Supported programming languages	C#	C C# C++ Go Java JavaScript PHP via ODBC Python R via ODBC Scala	.Net Go Java JavaScript (Node.js) PowerShell Python R	.Net C C++ Delphi Erlang Java JavaScript (Node.js) Perl PHP Python Tcl
Server-side scripts Stored procedures	yes via applications	no	Yes, possible languages: KQL, Python, R	user defined functions
Triggers	yes via applications	no	yes see docs.microsoft.com/­en-us/­azure/­kusto/­management/­updatepolicy	yes
Partitioning methods Methods for storing different data on different nodes	Sharding	Sharding	Sharding Implicit feature of the cloud service	horizontal partitioning
Replication methods Methods for redundantly storing data on multiple nodes	selectable replication factor	selectable replication factor	yes Implicit feature of the cloud service. Replication either local, cross-facility or geo-redundant.
MapReduce Offers an API for user-defined Map/Reduce methods	yes	no	Spark connector (open source): github.com/­Azure/­azure-kusto-spark	no
Consistency concepts Methods to ensure consistency in a distributed system	Eventual Consistency Immediate Consistency		Eventual Consistency Immediate Consistency	Immediate Consistency
Foreign keys Referential integrity	no	no	no	yes
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	no	no	no	ACID MVCC
Concurrency Support for concurrent manipulation of data	yes	yes	yes	yes
Durability Support for making data persistent	yes	no	yes	yes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.		yes volatile and lookup table	no	no
User concepts Access control	no Can implement custom security layer via applications	simple password-based access control	Azure Active Directory Authentication	fine grained access rights according to SQL-standard
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More resources
	FatDB	Machbase Neo Former name was Infiniflux	Microsoft Azure Data Explorer	Postgres-XL
Recent citations in the 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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