DBMS > PostgreSQL vs. TerminusDB vs. VelocityDB
System Properties Comparison PostgreSQL vs. TerminusDB vs. VelocityDB
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|Editorial information provided by DB-Engines|
|Name||PostgreSQL Xexclude from comparison||TerminusDB former name was DataChemist Xexclude from comparison||VelocityDB Xexclude from comparison|
|Description||Widely used open source RDBMS Developed as objectoriented DBMS (Postgres), gradually enhanced with 'standards' like SQL||Scalable Graph Database platform making enterprise data available by exploiting inferred entities and relationships||A .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)|
|Primary database model||Relational DBMS with object oriented extensions, e.g.: user defined types/functions and inheritance. Handling of key/value pairs with hstore module.||Graph DBMS||Graph DBMS|
Object oriented DBMS
|Secondary database models||Document store||Document store|
|Developer||PostgreSQL Global Development Group www.postgresql.org/developer||DataChemist Ltd.||VelocityDB Inc|
|Initial release||1989 1989: Postgres, 1996: PostgreSQL||2018||2011|
|Current release||12.0, October 2019||1.0, 2018||7.x|
|License Commercial or Open Source||Open Source BSD||Open Source GPL V3||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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|Implementation language||C||Prolog, Rust||C#|
|Server operating systems||FreeBSD|
|Linux||Any that supports .NET|
|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.||yes specific XML-type available, but no XML query functionality.||no||no|
|SQL Support of SQL||yes standard with numerous extensions||SQL-like query language (WOQL)||no|
|APIs and other access methods||native C library|
streaming API for large objects
RESTful HTTP API
WOQL (Web Object Query Language)
|Supported programming languages||.Net|
|Server-side scripts Stored procedures||user defined functions realized in proprietary language PL/pgSQL or with common languages like Perl, Python, Tcl etc.||yes||no|
|Triggers||yes||yes||Callbacks are triggered when data changes|
|Partitioning methods Methods for storing different data on different nodes||partitioning by range, list and (since PostgreSQL 11) by hash||Graph Partitioning||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||Master-slave replication other methods possible by using 3rd party extensions||Journaling Streams|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Immediate Consistency|
|Foreign keys Referential integrity||yes||yes||no|
|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 in-memory journaling||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||no||yes|
|User concepts Access control||fine grained access rights according to SQL-standard||Role-based access control||Based on Windows Authentication|
More information provided by the system vendor
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|Related products and services|
|3rd parties||DBHawk: a web-based PostgreSQL/Greenplum database tool. Boost database development and BI productivity with an online Universal database tool.|
Azure Database for PostgreSQL provides fully managed, enterprise-ready community PostgreSQL database as a service
2ndQuadrant: PostgreSQL Solutions for the Enterprise.
SQLPro for PostgreSQL: A simple but powerful PostgreSQL database client available on iPhone and iPad as well as macOS.
Navicat for PostgreSQL is an easy-to-use graphical tool for PostgreSQL database development.
pgDash: In-Depth PostgreSQL Monitoring.
Dremio is like magic for PostgreSQL accelerating your analytical queries up to 1,000x.
General SQL Parser: Instantly adding parsing, decoding, analysis and rewrite SQL processing capability to your products.
We invite representatives of vendors of related products to contact us for presenting information about their offerings here.
|PostgreSQL||TerminusDB former name was DataChemist||VelocityDB|
|DB-Engines blog posts|
PostgreSQL is the DBMS of the Year 2018
|Conferences and events|
PostgreSQL Conference, Europe 2019
|Recent citations in the news|
PostgreSQL 12 boosts open source database performance
PostgreSQL 12 Released
2ndQuadrant Contributes Major Features to PostgreSQL 12
PostgreSQL turns performance up for v12 release
Percona packages PostgreSQL alongside existing MySQL and MongoDB products
provided by Google News
PostgreSQL Database Engineer (Denver or Austin)
Alibaba Cloud Solutions Architect Washington, D.C., US
Technical Success Specialist
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