DBMS > Hazelcast vs. PostgreSQL vs. UniData,UniVerse
System Properties Comparison Hazelcast vs. PostgreSQL vs. UniData,UniVerse
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|Editorial information provided by DB-Engines|
|Name||Hazelcast Xexclude from comparison||PostgreSQL Xexclude from comparison||UniData,UniVerse Xexclude from comparison|
|Description||A widely adopted in-memory data grid||Widely used open source RDBMS Developed as objectoriented DBMS (Postgres), gradually enhanced with 'standards' like SQL||MultiValue database and application server with SQL mapping layer and meta database capabilities|
|Primary database model||Key-value store||Relational DBMS with object oriented extensions, e.g.: user defined types/functions and inheritance. Handling of key/value pairs with hstore module.||Multivalue DBMS|
|Secondary database models||Document store JSON support with IMDG 3.12||Document store|
Graph DBMS with Apache Age
Vector DBMS with pgvector extension
|Developer||Hazelcast||PostgreSQL Global Development Group www.postgresql.org/developer||Rocket Software|
|Initial release||2008||1989 1989: Postgres, 1996: PostgreSQL||1985|
|Current release||5.3.2, August 2023||16.0, September 2023|
|License Commercial or Open Source||Open Source Apache Version 2; commercial licenses available||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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|Aiven for PostgreSQL: Fully managed PostgreSQL for developers with 70+ extensions and flexible orchestration tools.|
|Server operating systems||All OS with a Java VM||FreeBSD|
|Typing predefined data types such as float or date||yes||yes||optional|
|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 the object must implement a serialization strategy||yes specific XML-type available, but no XML query functionality.|
|SQL Support of SQL||SQL-like query language||yes standard with numerous extensions||yes|
|APIs and other access methods||JCache|
RESTful HTTP API
native C library
streaming API for large objects
|Java API JPA|
RESTful HTTP API
|Supported programming languages||.Net|
Basic U2 Basic
|Server-side scripts Stored procedures||yes Event Listeners, Executor Services||user defined functions realized in proprietary language PL/pgSQL or with common languages like Perl, Python, Tcl etc.||yes|
|Triggers||yes Events||yes||yes U2 Basic|
|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 Replicated Map||Source-replica replication other methods possible by using 3rd party extensions||Source-replica replication|
|MapReduce Offers an API for user-defined Map/Reduce methods||yes||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency or Eventual Consistency selectable by user Raft Consensus Algorithm||Immediate Consistency|
|Foreign keys Referential integrity||no||yes||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||one or two-phase-commit; repeatable reads; read commited||ACID||ACID configurable|
|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.||yes||no|
|User concepts Access control||Role-based access control||fine grained access rights according to SQL-standard||Access rights according to SQL-standard and operating system based|
More information provided by the system vendor
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