DBMS > Kdb vs. ToroDB
System Properties Comparison Kdb vs. ToroDB
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|Editorial information provided by DB-Engines|
|Name||Kdb Xexclude from comparison||ToroDB Xexclude from comparison|
|ToroDB seems to be discontinued. Therefore it is excluded from the DB-Engines Ranking.|
|Description||High performance Time Series DBMS||A MongoDB-compatible JSON document store, built on top of PostgreSQL|
|Primary database model||Time Series DBMS|
|Secondary database models||Relational DBMS|
|Developer||Kx Systems, a division of First Derivatives plc||8Kdata|
|Initial release||2000 kdb was released 2000, kdb+ in 2003||2016|
|Current release||3.6, May 2018|
|License Commercial or Open Source||commercial free 32-bit version||Open Source AGPL-V3|
|Cloud-based only Only available as a cloud service||no||no|
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|Server operating systems||Linux|
|All OS with a Java 7 VM|
|Typing predefined data types such as float or date||yes||yes string, integer, double, boolean, date, object_id|
|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'|
|SQL Support of SQL||SQL-like query language (q)|
|APIs and other access methods||HTTP API|
|Supported programming languages||C|
|Server-side scripts Stored procedures||user defined functions|
|Triggers||yes with views||no|
|Partitioning methods Methods for storing different data on different nodes||horizontal partitioning||Sharding|
|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|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Eventual Consistency|
|Foreign keys Referential integrity||yes||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||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|
|User concepts Access control||rights management via user accounts||Access rights for users and roles|
|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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