DBMS > Elasticsearch vs. EXASOL vs. Hawkular Metrics
System Properties Comparison Elasticsearch vs. EXASOL vs. Hawkular Metrics
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|Editorial information provided by DB-Engines|
|Name||Elasticsearch Xexclude from comparison||EXASOL Xexclude from comparison||Hawkular Metrics 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, in-memory, MPP database specifically designed for in-memory analytics.||Hawkular metrics is the metric storage of the Red Hat sponsored Hawkular monitoring system. It is based on Cassandra.|
|Primary database model||Search engine||Relational DBMS||Time Series DBMS|
|Secondary database models||Document store|
|Developer||Elastic||Exasol||Community supported by Red Hat|
|Current release||7.8.0, June 2020|
|License Commercial or Open Source||Open Source Elastic License||commercial||Open Source Apache 2.0|
|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||no||no|
|Secondary indexes||yes All search fields are automatically indexed||yes||no|
|SQL Support of SQL||SQL-like query language||yes||no|
|APIs and other access methods||Java API|
RESTful HTTP/JSON API
|Supported programming languages||.Net|
Community Contributed Clients
|Server-side scripts Stored procedures||yes||user defined functions||no|
|Triggers||yes by using the 'percolation' feature||yes||yes via Hawkular Alerting|
|Partitioning methods Methods for storing different data on different nodes||Sharding||Sharding||Sharding based on Cassandra|
|Replication methods Methods for redundantly storing data on multiple nodes||yes||selectable replication factor based on Cassandra|
|MapReduce Offers an API for user-defined Map/Reduce methods||ES-Hadoop Connector||yes Hadoop integration||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||Eventual Consistency based on Cassandra|
Immediate Consistency based on Cassandra
|Foreign keys Referential integrity||no||yes||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||ACID||no|
|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||Access rights for users, groups and roles according to SQL-standard||no|
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|DB-Engines blog posts|
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Elasticsearch moved into the top 10 most popular database management systems MySQL, PostgreSQL and Redis are the winners of the March ranking
MySQL, PostgreSQL and Redis are the winners of the March ranking
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