DBMS > Brytlyt vs. Drizzle vs. Hawkular Metrics
System Properties Comparison Brytlyt vs. Drizzle vs. Hawkular Metrics
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|Editorial information provided by DB-Engines|
|Name||Brytlyt Xexclude from comparison||Drizzle Xexclude from comparison||Hawkular Metrics 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||Scalable GPU-accelerated RDBMS for very fast analytic and streaming workloads, leveraging PostgreSQL||MySQL fork with a pluggable micro-kernel and with an emphasis of performance over compatibility.||Hawkular metrics is the metric storage of the Red Hat sponsored Hawkular monitoring system. It is based on Cassandra.|
|Primary database model||Relational DBMS||Relational DBMS||Time Series DBMS|
|Developer||Brytlyt||Drizzle project, originally started by Brian Aker||Community supported by Red Hat|
|Current release||0.9, October 2016||7.2.4, September 2012|
|License Commercial or Open Source||commercial||Open Source GNU GPL||Open Source Apache 2.0|
|Cloud-based only Only available as a cloud service||no||no||no|
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|Implementation language||C, C++ and CUDA||C++||Java|
|Server operating systems||Linux|
|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.||yes specific XML-type available, but no XML query functionality.||no|
|SQL Support of SQL||yes||yes with proprietary extensions||no|
|APIs and other access methods||ADO.NET|
native C library
streaming API for large objects
|Supported programming languages||.Net|
|Server-side scripts Stored procedures||user defined functions in PL/pgSQL||no||no|
|Triggers||yes||no hooks for callbacks inside the server can be used.||yes via Hawkular Alerting|
|Partitioning methods Methods for storing different data on different nodes||Sharding||Sharding based on Cassandra|
|Replication methods Methods for redundantly storing data on multiple nodes||Source-replica replication||Multi-source replication|
|selectable replication factor based on Cassandra|
|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||Eventual Consistency based on Cassandra|
Immediate Consistency based on Cassandra
|Foreign keys Referential integrity||yes||yes||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||ACID||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.||no|
|User concepts Access control||fine grained access rights according to SQL-standard||Pluggable authentication mechanisms e.g. LDAP, HTTP||no|
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