DBMS > Elasticsearch vs. Kdb vs. searchxml
System Properties Comparison Elasticsearch vs. Kdb vs. searchxml
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|Editorial information provided by DB-Engines|
|Name||Elasticsearch Xexclude from comparison||Kdb Xexclude from comparison||searchxml Xexclude from comparison|
|Description||A distributed, RESTful modern search and analytics engine based on Apache Lucene Elasticsearch lets you perform and combine many types of searches such as structured, unstructured, geo, and metric||High performance Time Series DBMS||DBMS for structured and unstructured content wrapped with an application server|
|Primary database model||Search engine||Time Series DBMS|
|Native XML DBMS|
|Secondary database models||Document store|
|Developer||Elastic||Kx Systems, a division of First Derivatives plc||informationpartners gmbh|
|Initial release||2010||2000 kdb was released 2000, kdb+ in 2003||2015|
|Current release||8.6, January 2023||3.6, May 2018||1.0|
|License Commercial or Open Source||Open Source Elastic License||commercial free 32-bit version||commercial|
|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||All OS with a Java VM||Linux|
|Data scheme||schema-free Flexible type definitions. Once a type is defined, it is persistent||yes||schema-free|
|Typing predefined data types such as float or date||yes||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||yes||yes|
|Secondary indexes||yes All search fields are automatically indexed||yes table attribute 'grouped'||yes|
|SQL Support of SQL||SQL-like query language||SQL-like query language (q)||no|
|APIs and other access methods||Java API|
RESTful HTTP/JSON API
|RESTful HTTP API|
|Supported programming languages||.Net|
Community Contributed Clients
|C++ most other programming languages supported via APIs|
|Server-side scripts Stored procedures||yes||user defined functions||yes on the application server|
|Triggers||yes by using the 'percolation' feature||yes with views||no|
|Partitioning methods Methods for storing different data on different nodes||Sharding||horizontal partitioning||none|
|Replication methods Methods for redundantly storing data on multiple nodes||yes||Source-replica replication||yes sychronisation to multiple collections|
|MapReduce Offers an API for user-defined Map/Reduce methods||ES-Hadoop Connector||no similar paradigm used for internal processing||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Eventual Consistency Synchronous doc based replication. Get by ID may show delays up to 1 sec. Configurable write consistency: one, quorum, all||Immediate Consistency||Immediate Consistency|
|Foreign keys Referential integrity||no||yes||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||no||multiple readers, single writer|
|Concurrency Support for concurrent manipulation of data||yes||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.||Memcached and Redis integration||yes||no|
|User concepts Access control||rights management via user accounts||Domain, group and role-based access control at the document level and for application services|
|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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