DBMS > DolphinDB vs. etcd
System Properties Comparison DolphinDB vs. etcd
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|Editorial information provided by DB-Engines|
|Name||DolphinDB Xexclude from comparison||etcd Xexclude from comparison|
|Description||DolphinDB is a high performance Time Series DBMS. It is integrated with an easy-to-use fully featured programming language and a high-volume high-velocity streaming analytics system. It offers operational simplicity, scalability, fault tolerance, and concurrency.||A distributed reliable key-value store|
|Primary database model||Time Series DBMS||Key-value store|
|Secondary database models||Relational DBMS|
|Current release||v2.00.4, January 2022||3.4, August 2019|
|License Commercial or Open Source||commercial free community version available||Open Source Apache Version 2.0|
|Cloud-based only Only available as a cloud service||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Server operating systems||Linux|
|Typing predefined data types such as float or date||yes||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||no|
|SQL Support of SQL||SQL-like query language||no|
|APIs and other access methods||JDBC|
JSON over HTTP
MQTT (Message Queue Telemetry Transport)
JSON over HTTP
|Supported programming languages||C#|
|Server-side scripts Stored procedures||yes||no|
|Triggers||no||yes, watching key changes|
|Partitioning methods Methods for storing different data on different nodes||horizontal partitioning|
|Replication methods Methods for redundantly storing data on multiple nodes||yes||Using Raft consensus algorithm to ensure data replication with strong consistency among multiple replicas.|
|MapReduce Offers an API for user-defined Map/Reduce methods||yes||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Immediate Consistency|
|Foreign keys Referential integrity||no||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||yes||no|
|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.||yes||no|
|User concepts Access control||Administrators, Users, Groups||no|
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