DBMS > Drizzle vs. HEAVY.AI vs. Prometheus
System Properties Comparison Drizzle vs. HEAVY.AI vs. Prometheus
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|Editorial information provided by DB-Engines|
|Name||Drizzle Xexclude from comparison||HEAVY.AI Formerly named 'OmniSci', rebranded to 'HEAVY.AI' in March 2022 Xexclude from comparison||Prometheus Xexclude from comparison|
|Drizzle has published its last release in September 2012. The open-source project is discontinued and Drizzle is excluded from the DB-Engines ranking.|
|Description||MySQL fork with a pluggable micro-kernel and with an emphasis of performance over compatibility.||A high performance, column-oriented RDBMS, specifically developed to harness the massive parallelism of modern CPU and GPU hardware||Open-source TimeSeries DBMS and monitoring system|
|Primary database model||Relational DBMS||Relational DBMS||Time Series DBMS|
|Secondary database models||Spatial DBMS|
|Developer||Drizzle project, originally started by Brian Aker||HEAVY.AI, Inc.|
|Current release||7.2.4, September 2012||5.10, January 2022|
|License Commercial or Open Source||Open Source GNU GPL||Open Source Apache Version 2; enterprise edition available||Open Source Apache 2.0|
|Cloud-based only Only available as a cloud service||no||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Implementation language||C++||C++ and CUDA||Go|
|Server operating systems||FreeBSD|
|Typing predefined data types such as float or date||yes||yes||Numeric data only|
|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 Import of XML data possible|
|SQL Support of SQL||yes with proprietary extensions||yes||no|
|APIs and other access methods||JDBC||JDBC|
|RESTful HTTP/JSON API|
|Supported programming languages||C|
|All languages supporting JDBC/ODBC/Thrift|
|Server-side scripts Stored procedures||no||no||no|
|Triggers||no hooks for callbacks inside the server can be used.||no||no|
|Partitioning methods Methods for storing different data on different nodes||Sharding||Sharding Round robin||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||Multi-source replication|
|Multi-source replication||yes by Federation|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||none|
|Foreign keys Referential integrity||yes||no||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||no||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.||yes||no|
|User concepts Access control||Pluggable authentication mechanisms e.g. LDAP, HTTP||fine grained access rights according to SQL-standard||no|
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|Drizzle||HEAVY.AI Formerly named 'OmniSci', rebranded to 'HEAVY.AI' in March 2022||Prometheus|
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