DBMS > EJDB vs. GreptimeDB vs. WakandaDB
System Properties Comparison EJDB vs. GreptimeDB vs. WakandaDB
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|Editorial information provided by DB-Engines|
|Name||EJDB Xexclude from comparison||GreptimeDB Xexclude from comparison||WakandaDB Xexclude from comparison|
|Primary database model||Document store||Time Series DBMS||Object oriented DBMS|
|Developer||Softmotions||Greptime Inc.||Wakanda SAS|
|Current release||2.7.0 (April 29, 2019), April 2019|
|License Commercial or Open Source||Open Source GPLv2||Open Source Apache Version 2.0||Open Source AGPLv3, extended commercial license available|
|Cloud-based only Only available as a cloud service||no||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Server operating systems||server-less||Docker|
|Data scheme||schema-free||Fixed schema||yes|
|Typing predefined data types such as float or date||yes string, integer, double, bool, date, object_id||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||no|
|SQL Support of SQL||no||yes||no|
|APIs and other access methods||in-process shared library||gRPC|
|RESTful HTTP API|
|Supported programming languages||Actionscript|
|Server-side scripts Stored procedures||no||Python||yes|
|Partitioning methods Methods for storing different data on different nodes||none||Sharding||none|
|Replication methods Methods for redundantly storing data on multiple nodes||none||none|
|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|
|Foreign keys Referential integrity||no typically not needed, however similar functionality with collection joins possible|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||ACID|
|Concurrency Support for concurrent manipulation of data||yes Read/Write Locking||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||no||yes|
|More information provided by the system vendor|
|Specific characteristics||GreptimeDB is a SQL & Python-enabled timeseries database system built from scratch...|
|Competitive advantages||- Inherits advantages of Rust, such as excellent performance, memory safe, resource...|
|Typical application scenarios||For IoT industries, GreptimeDB can seamless integrate with message queues and other...|
|Licensing and pricing models||GreptimeDB: open source, distributed, cloud-native TSDB; supports Hybrid Time-series...|
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