DBMS > Derby vs. Dragonfly vs. TempoIQ
System Properties Comparison Derby vs. Dragonfly vs. TempoIQ
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|Editorial information provided by DB-Engines|
|Name||Derby often called Apache Derby, originally IBM Cloudscape; contained in the Java SDK as JavaDB Xexclude from comparison||Dragonfly Xexclude from comparison||TempoIQ formerly TempoDB Xexclude from comparison|
|TempoIQ seems to be decommissioned. It will be removed from the DB-Engines ranking.|
|Description||Full-featured RDBMS with a small footprint, either embedded into a Java application or used as a database server.||A drop-in Redis replacement that scales vertically to support millions of operations per second and terabyte sized workloads, all on a single instance||Scalable analytics DBMS for sensor data, provided as a service (SaaS)|
|Primary database model||Relational DBMS||Key-value store||Time Series DBMS|
|Developer||Apache Software Foundation||DragonflyDB team and community contributors||TempoIQ|
|Current release||10.16.1.1, May 2022||1.0, March 2023|
|License Commercial or Open Source||Open Source Apache version 2||Open Source BSL 1.1||commercial|
|Cloud-based only Only available as a cloud service||no||no||yes|
|DBaaS offerings (sponsored links) Database as a Service|
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|Server operating systems||All OS with a Java VM||Linux|
|Typing predefined data types such as float or date||yes||strings, hashes, lists, sets, sorted sets, bit arrays||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||no||no|
|SQL Support of SQL||yes||no||no|
|APIs and other access methods||JDBC||Proprietary protocol RESP - REdis Serialization Protocol||HTTP API|
|Supported programming languages||Java||C|
|Server-side scripts Stored procedures||Java Stored Procedures||Lua||no|
|Triggers||yes||publish/subscribe channels provide some trigger functionality||yes Realtime Alerts|
|Partitioning methods Methods for storing different data on different nodes||none|
|Replication methods Methods for redundantly storing data on multiple nodes||Source-replica replication||Source-replica 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||Eventual Consistency|
|Foreign keys Referential integrity||yes||no||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||Atomic execution of command blocks and scripts||no|
|Concurrency Support for concurrent manipulation of data||yes||yes, strict serializability by the server||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||yes||no|
|User concepts Access control||fine grained access rights according to SQL-standard||Password-based authentication||simple authentication-based access control|
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|Derby often called Apache Derby, originally IBM Cloudscape; contained in the Java SDK as JavaDB||Dragonfly||TempoIQ formerly TempoDB|
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