DBMS > Elasticsearch vs. PostgreSQL vs. SAP SQL Anywhere
System Properties Comparison Elasticsearch vs. PostgreSQL vs. SAP SQL Anywhere
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|Editorial information provided by DB-Engines|
|Name||Elasticsearch Xexclude from comparison||PostgreSQL Xexclude from comparison||SAP SQL Anywhere formerly called Adaptive Server Anywhere 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||Widely used open source RDBMS Developed as objectoriented DBMS (Postgres), gradually enhanced with 'standards' like SQL||RDBMS database and synchronization technologies for server, desktop, remote office, and mobile environments|
|Primary database model||Search engine||Relational DBMS with object oriented extensions, e.g.: user defined types/functions and inheritance. Handling of key/value pairs with hstore module.||Relational DBMS|
|Secondary database models||Document store|
|Developer||Elastic||PostgreSQL Global Development Group www.postgresql.org/developer||SAP formerly Sybase|
|Initial release||2010||1989 1989: Postgres, 1996: PostgreSQL||1992|
|Current release||8.6, January 2023||15.2, February 2023||17, July 2015|
|License Commercial or Open Source||Open Source Elastic License||Open Source BSD||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||FreeBSD|
|Data scheme||schema-free Flexible type definitions. Once a type is defined, it is persistent||yes||yes|
|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 specific XML-type available, but no XML query functionality.||yes|
|Secondary indexes||yes All search fields are automatically indexed||yes||yes|
|SQL Support of SQL||SQL-like query language||yes standard with numerous extensions||yes|
|APIs and other access methods||Java API|
RESTful HTTP/JSON API
native C library
streaming API for large objects
|Supported programming languages||.Net|
Community Contributed Clients
|Server-side scripts Stored procedures||yes||user defined functions realized in proprietary language PL/pgSQL or with common languages like Perl, Python, Tcl etc.||yes, in C/C++, Java, .Net or Perl|
|Triggers||yes by using the 'percolation' feature||yes||yes|
|Partitioning methods Methods for storing different data on different nodes||Sharding||partitioning by range, list and (since PostgreSQL 11) by hash||none|
|Replication methods Methods for redundantly storing data on multiple nodes||yes||Source-replica replication other methods possible by using 3rd party extensions||Source-replica replication Database mirroring|
|MapReduce Offers an API for user-defined Map/Reduce methods||ES-Hadoop Connector||no||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||yes|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||ACID||ACID|
|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||no||yes|
|User concepts Access control||fine grained access rights according to SQL-standard||fine grained access rights according to SQL-standard|
More information provided by the system vendor
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|Elasticsearch||PostgreSQL||SAP SQL Anywhere formerly called Adaptive Server Anywhere|
|DB-Engines blog posts|
PostgreSQL is the DBMS of the Year 2017 Elasticsearch moved into the top 10 most popular database management systems MySQL, PostgreSQL and Redis are the winners of the March ranking
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
Snowflake is the DBMS of the Year 2022, defending the title from last year Snowflake is the DBMS of the Year 2021 Driving the Future of PostgreSQL Adoption
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Driving the Future of PostgreSQL Adoption
|Conferences and events|
PGCon 2023, PostgreSQL Conference for Users and Developers
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