DBMS > Cloudflare Workers KV vs. OpenQM
System Properties Comparison Cloudflare Workers KV vs. OpenQM
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|Editorial information provided by DB-Engines|
|Name||Cloudflare Workers KV Xexclude from comparison||OpenQM also called QM Xexclude from comparison|
|Description||A global, low-latency, key-value store for applications on Cloudflare with exceptionally high read volumes and low-latency.||QpenQM is a high-performance, self-tuning, multi-value DBMS|
|Primary database model||Key-value store||Multivalue DBMS|
|License Commercial or Open Source||commercial||Open Source GPLv2, extended commercial license available|
|Cloud-based only Only available as a cloud service||yes||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Server operating systems||hosted||AIX|
|Data scheme||schema-free||yes with some exceptions|
|Typing predefined data types such as float or date||no|
|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|
|SQL Support of SQL||no||no|
|APIs and other access methods||HTTP REST|
|Supported programming languages||C|
|Server-side scripts Stored procedures||no||yes|
|Partitioning methods Methods for storing different data on different nodes||yes|
|Replication methods Methods for redundantly storing data on multiple nodes||yes||yes|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Eventual Consistency||Immediate Consistency|
|Foreign keys Referential integrity||no||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||ACID|
|Concurrency Support for concurrent manipulation of data||yes||yes|
|Durability Support for making data persistent||yes||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||no|
|User concepts Access control||Access rights can be defined down to the item level|
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|Cloudflare Workers KV||OpenQM also called QM|
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