DBMS > OrientDB vs. PostgreSQL vs. Trafodion
System Properties Comparison OrientDB vs. PostgreSQL vs. Trafodion
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|Editorial information provided by DB-Engines|
|Name||OrientDB Xexclude from comparison||PostgreSQL Xexclude from comparison||Trafodion Xexclude from comparison|
|Description||Multi-model DBMS (Document, Graph, Key/Value)||Widely used open source RDBMS Developed as objectoriented DBMS (Postgres), gradually enhanced with 'standards' like SQL||Transactional SQL-on-Hadoop DBMS|
|Primary database model||Document store|
|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||OrientDB LTD; CallidusCloud; SAP||PostgreSQL Global Development Group www.postgresql.org/developer||Apache Software Foundation, originally developed by HP|
|Initial release||2010||1989 1989: Postgres, 1996: PostgreSQL||2014|
|Current release||3.1.9, February 2021||14.3, May 2022||2.3.0, February 2019|
|License Commercial or Open Source||Open Source Apache version 2||Open Source BSD||Open Source Apache 2.0|
|Cloud-based only Only available as a cloud service||no||no||no|
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|Implementation language||Java||C||C++, Java|
|Server operating systems||All OS with a Java JDK (>= JDK 6)||FreeBSD|
|Data scheme||schema-free Schema can be enforced for whole record ("schema-full") or for some fields only ("schema-hybrid")||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.||no|
|SQL Support of SQL||SQL-like query language, no joins||yes standard with numerous extensions||yes|
|APIs and other access methods||Tinkerpop technology stack with Blueprints, Gremlin, Pipes|
RESTful HTTP/JSON API
native C library
streaming API for large objects
|Supported programming languages||.Net|
|All languages supporting JDBC/ODBC/ADO.Net|
|Partitioning methods Methods for storing different data on different nodes||Sharding||partitioning by range, list and (since PostgreSQL 11) by hash||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||Multi-source replication||Source-replica replication other methods possible by using 3rd party extensions||yes, via HBase|
|MapReduce Offers an API for user-defined Map/Reduce methods||no could be achieved with distributed queries||no||yes via user defined functions and HBase|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Immediate Consistency|
|Foreign keys Referential integrity||yes relationship in graphs||yes||yes|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||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.||no||no|
|User concepts Access control||Access rights for users and roles; record level security configurable||fine grained access rights according to SQL-standard||fine grained access rights according to SQL-standard|
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