DBMS > Apache Druid vs. MySQL vs. Oracle Rdb
System Properties Comparison Apache Druid vs. MySQL vs. Oracle Rdb
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|Editorial information provided by DB-Engines|
|Name||Apache Druid Xexclude from comparison||MySQL Xexclude from comparison||Oracle Rdb Xexclude from comparison|
|Description||Open-source analytics data store designed for sub-second OLAP queries on high dimensionality and high cardinality data||Widely used open source RDBMS|
|Primary database model||Relational DBMS|
Time Series DBMS
|Relational DBMS Key/Value like access via memcached API||Relational DBMS|
|Secondary database models||Document store|
|Developer||Apache Software Foundation and contributors||Oracle since 2010, originally MySQL AB, then Sun||Oracle, originally developed by Digital Equipment Corporation (DEC)|
|Current release||25.0.0, January 2023||8.0.32, January 2023||126.96.36.199, 2021|
|License Commercial or Open Source||Open Source Apache license v2||Open Source GPL version 2. Commercial licenses with extended functionallity are available||commercial|
|Cloud-based only Only available as a cloud service||no||no||no|
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|Implementation language||Java||C and C++|
|Server operating systems||Linux|
|HP Open VMS|
|Data scheme||yes schema-less columns are supported||yes||Flexible Schema (defined schema, partial schema, schema free)|
|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||yes||no|
|SQL Support of SQL||SQL for querying||yes with proprietary extensions||yes|
|APIs and other access methods||JDBC|
RESTful HTTP/JSON API
Proprietary native API
|Supported programming languages||Clojure|
|Server-side scripts Stored procedures||no||yes proprietary syntax|
|Partitioning methods Methods for storing different data on different nodes||Sharding manual/auto, time-based||horizontal partitioning, sharding with MySQL Cluster or MySQL Fabric|
|Replication methods Methods for redundantly storing data on multiple nodes||yes, via HDFS, S3 or other storage engines||Multi-source replication|
|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||Immediate Consistency||Immediate Consistency|
|Foreign keys Referential integrity||no||yes not for MyISAM storage engine||yes|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||ACID not for MyISAM storage engine||yes, on a single node|
|Concurrency Support for concurrent manipulation of data||yes||yes table locks or row locks depending on storage engine||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||yes||no|
|User concepts Access control||RBAC using LDAP or Druid internals for users and groups for read/write by datasource and system||Users with fine-grained authorization concept no user groups or roles|
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|Apache Druid||MySQL||Oracle Rdb|
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