DBMS > Blueflood vs. Microsoft Azure Synapse Analytics vs. OpenQM vs. VelocityDB

System Properties Comparison Blueflood vs. Microsoft Azure Synapse Analytics vs. OpenQM vs. VelocityDB

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Editorial information provided by DB-Engines
Name	Blueflood  Xexclude from comparison	Microsoft Azure Synapse Analytics previously named Azure SQL Data Warehouse  Xexclude from comparison	OpenQM also called QM  Xexclude from comparison	VelocityDB  Xexclude from comparison
Description	Scalable TimeSeries DBMS based on Cassandra	Elastic, large scale data warehouse service leveraging the broad eco-system of SQL Server	QpenQM is a high-performance, self-tuning, multi-value DBMS	A .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database model	Time Series DBMS	Relational DBMS	Multivalue DBMS	Graph DBMS Object oriented DBMS
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 0.13 Rank #346   Overall #33   Time Series DBMS	Score 19.93 Rank #31   Overall #19   Relational DBMS	Score 0.34 Rank #284   Overall #10   Multivalue DBMS	Score 0.11 Rank #354   Overall #37   Graph DBMS #15   Object oriented DBMS
Website	blueflood.io	azure.microsoft.com/­services/­synapse-analytics	www.rocketsoftware.com/­products/­rocket-multivalue-application-development-platform/­rocket-open-qm	velocitydb.com
Technical documentation	github.com/­rax-maas/­blueflood/­wiki	docs.microsoft.com/­azure/­synapse-analytics		velocitydb.com/­UserGuide
Developer	Rackspace	Microsoft	Rocket Software, originally Martin Phillips	VelocityDB Inc
Initial release	2013	2016	1993	2011
Current release			3.4-12	7.x
License Commercial or Open Source	Open Source Apache 2.0	commercial	Open Source GPLv2, extended commercial license available	commercial
Cloud-based only Only available as a cloud service	no	yes	no	no
DBaaS offerings (sponsored links) Database as a Service Providers of DBaaS offerings, please contact us to be listed.
Implementation language	Java	C++		C#
Server operating systems	Linux OS X	hosted	AIX FreeBSD Linux macOS Raspberry Pi Solaris Windows	Any that supports .NET
Data scheme	predefined scheme	yes	yes with some exceptions	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.	no	no	yes	no
Secondary indexes	no	yes	yes	yes
SQL Support of SQL	no	yes	no	no
APIs and other access methods	HTTP REST	ADO.NET JDBC ODBC		.Net
Supported programming languages		C# Java PHP	.Net Basic C Java Objective C PHP Python	.Net
Server-side scripts Stored procedures	no	Transact SQL	yes	no
Triggers	no	no	yes	Callbacks are triggered when data changes
Partitioning methods Methods for storing different data on different nodes	Sharding based on Cassandra	Sharding, horizontal partitioning	yes	Sharding
Replication methods Methods for redundantly storing data on multiple nodes	selectable replication factor based on Cassandra	yes	yes
MapReduce Offers an API for user-defined Map/Reduce methods	no	no	no	no
Consistency concepts Methods to ensure consistency in a distributed system	Eventual Consistency based on Cassandra Immediate Consistency based on Cassandra	Immediate Consistency	Immediate Consistency	Immediate Consistency
Foreign keys Referential integrity	no	no docs.microsoft.com/­en-us/­azure/­synapse-analytics/­sql-data-warehouse/­sql-data-warehouse-table-constraints	no	no
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	no	ACID	ACID	ACID
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			yes
User concepts Access control	no	yes	Access rights can be defined down to the item level	Based on Windows Authentication
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More resources
	Blueflood	Microsoft Azure Synapse Analytics previously named Azure SQL Data Warehouse	OpenQM also called QM	VelocityDB
Recent citations in the news	Real-Time Performance and Health Monitoring Using Netdata 2 September 2019, CNX Software provided by Google News	General Available: Azure Synapse Runtime for Apache Spark 3.4 is now GA | Azure updates 8 April 2024, azure.microsoft.com Azure Synapse Runtime for Apache Spark 3.2 End of Support | Azure updates 22 March 2024, azure.microsoft.com Azure Synapse Analytics: Everything you need to know about Microsoft's cloud analytics platform 24 September 2023, DataScientest Migrate Microsoft Azure Synapse Analytics to Amazon Redshift using AWS SCT | Amazon Web Services 18 October 2023, AWS Blog Azure Synapse vs. Databricks: Data Platform Comparison 2024 26 March 2024, eWeek provided by Google News

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