DBMS > Kdb vs. openGauss
System Properties Comparison Kdb vs. openGauss
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|Editorial information provided by DB-Engines|
|Name||Kdb Xexclude from comparison||openGauss Xexclude from comparison|
|Description||High performance Time Series DBMS||An enterprise-class RDBMS compatible with high-performance, high-availability and high-performance originally developed by Huawei|
|Primary database model||Time Series DBMS||Relational DBMS|
|Secondary database models||Relational DBMS||Document store|
|Developer||Kx Systems, a division of First Derivatives plc||Huawei and openGauss community|
|Initial release||2000 kdb was released 2000, kdb+ in 2003||2019|
|Current release||3.6, May 2018||3.0, March 2022|
|License Commercial or Open Source||commercial free 32-bit version||Open Source|
|Cloud-based only Only available as a cloud service||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Implementation language||q||C, C++, Java|
|Server operating systems||Linux|
|Typing predefined data types such as float or date||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||no|
|Secondary indexes||yes table attribute 'grouped'||yes|
|SQL Support of SQL||SQL-like query language (q)||ANSI SQL 2011|
|APIs and other access methods||HTTP API|
|Supported programming languages||C|
|Server-side scripts Stored procedures||user defined functions||yes|
|Triggers||yes with views||yes|
|Partitioning methods Methods for storing different data on different nodes||horizontal partitioning||horizontal partitioning (by range, list and hash)|
|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 similar paradigm used for internal processing||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Immediate Consistency|
|Foreign keys Referential integrity||yes||yes|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||ACID|
|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||rights management via user accounts||Access rights for users, groups and roles according to SQL-standard|
|More information provided by the system vendor|
|Specific characteristics||Integrated columnar database & programming system for streaming, real time and historical...|
|Competitive advantages||provides seamless scalability; runs on industry standard server platforms; is top-ranked...|
|Typical application scenarios||tick database streaming sensor data massive intelligence applications oil and gas...|
|Key customers||Goldman Sachs Morgan Stanley Merrill Lynch J.P. Morgan Deutsche Bank IEX Securities...|
|Market metrics||kdb+ performance and reliability proven by our customers in critical infrastructure...|
|Licensing and pricing models||upon request|
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