DBMS > Cloudflare Workers KV vs. FatDB vs. OpenQM vs. SAP Advantage Database Server

System Properties Comparison Cloudflare Workers KV vs. FatDB vs. OpenQM vs. SAP Advantage Database Server

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Editorial information provided by DB-Engines
Name	Cloudflare Workers KV  Xexclude from comparison	FatDB  Xexclude from comparison	OpenQM also called QM  Xexclude from comparison	SAP Advantage Database Server former name: Sybase ADS  Xexclude from comparison
		FatDB/FatCloud has ceased operations as a company with February 2014. FatDB is discontinued and excluded from the ranking.		SAP Advantage Database Server seems to be discontinued. Therefore it is excluded from the DB-Engines Ranking.
Description	A global, low-latency, key-value store for applications on Cloudflare with exceptionally high read volumes and low-latency.	A .NET NoSQL DBMS that can integrate with and extend SQL Server.	QpenQM is a high-performance, self-tuning, multi-value DBMS	Low-cost RDBMS with access to ISAM and FoxPro data structures
Primary database model	Key-value store	Document store Key-value store	Multivalue DBMS	Relational DBMS
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 0.39 Rank #274   Overall #39   Key-value stores		Score 0.34 Rank #284   Overall #10   Multivalue DBMS
Website	www.cloudflare.com/­developer-platform/­workers-kv		www.rocketsoftware.com/­products/­rocket-multivalue-application-development-platform/­rocket-open-qm	www.sap.com/products/advantage-database-server.html
Technical documentation	developers.cloudflare.com/­kv/­api
Developer	Cloudflare	FatCloud	Rocket Software, originally Martin Phillips	Sybase, SAP
Initial release	2018	2012	1993	1993
Current release			3.4-12
License Commercial or Open Source	commercial	commercial	Open Source GPLv2, extended commercial license 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#
Server operating systems	hosted	Windows	AIX FreeBSD Linux macOS Raspberry Pi Solaris Windows	Linux Windows
Data scheme	schema-free	schema-free	yes with some exceptions	yes
Typing predefined data types such as float or date	no	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		yes	no
Secondary indexes	no	yes	yes	yes
SQL Support of SQL	no	no Via inetgration in SQL Server	no	yes
APIs and other access methods	HTTP REST Proprietary protocol	.NET Client API LINQ RESTful HTTP API RPC Windows WCF Bindings		.NET Client API ADO.NET JDBC ODBC OLE DB
Supported programming languages	C C++ Dart JavaScript Kotlin Python Rust Scala	C#	.Net Basic C Java Objective C PHP Python	Delphi Perl PHP
Server-side scripts Stored procedures	no	yes via applications	yes	yes
Triggers	no	yes via applications	yes	yes
Partitioning methods Methods for storing different data on different nodes		Sharding	yes	none
Replication methods Methods for redundantly storing data on multiple nodes	yes	selectable replication factor	yes	Multi-source replication CONFLICT Trigger to resolve replication conflicts Source-replica replication
MapReduce Offers an API for user-defined Map/Reduce methods	no	yes	no	no
Consistency concepts Methods to ensure consistency in a distributed system	Eventual Consistency	Eventual Consistency Immediate 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	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			no caching of (temporary) tables can be configured
User concepts Access control		no Can implement custom security layer via applications	Access rights can be defined down to the item level	fine grained access rights according to SQL-standard
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More resources
	Cloudflare Workers KV	FatDB	OpenQM also called QM	SAP Advantage Database Server former name: Sybase ADS
Recent citations in the news	Cloudflare updates Workers platform with Python support, event notifications, and improved local development ... 3 April 2024, DevClass Cloudflare recovers from service outage after power failure at core North American data center 3 November 2023, DatacenterDynamics Cloudflare dashboard, API service feeling poorly due to datacenter power snafu 2 November 2023, The Register Cloudflare is (still) struggling with another outage - here's what to know 3 November 2023, ZDNet Anonymous Sudan DDoS attack hits Cloudflare website 13 November 2023, SC Media provided by Google News			SAP Announces Q3 2023 Results: Asia Pacific and Japan View 19 October 2023, SAP News provided by Google News

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