DBMS > PostGIS vs. PostgreSQL vs. Quasardb
System Properties Comparison PostGIS vs. PostgreSQL vs. Quasardb
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|Editorial information provided by DB-Engines|
|Name||PostGIS Xexclude from comparison||PostgreSQL Xexclude from comparison||Quasardb Xexclude from comparison|
|Description||Spatial extension of PostgreSQL||Widely used open source RDBMS Developed as objectoriented DBMS (Postgres), gradually enhanced with 'standards' like SQL||Distributed, high-performance timeseries database|
|Primary database model||Spatial DBMS||Relational DBMS with object oriented extensions, e.g.: user defined types/functions and inheritance. Handling of key/value pairs with hstore module.||Time Series DBMS|
|Secondary database models||Relational DBMS||Document store|
|Developer||PostgreSQL Global Development Group www.postgresql.org/developer||quasardb|
|Initial release||2005||1989 1989: Postgres, 1996: PostgreSQL||2009|
|Current release||3.1.4, September 2021||14.0, September 2021||3.1, January 2019|
|License Commercial or Open Source||Open Source GPL v2.0||Open Source BSD||commercial Free community edition, Non-profit organizations and non-commercial usage are eligible for free licenses|
|Cloud-based only Only available as a cloud service||no||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|ScaleGrid for PostgreSQL: Fully managed PostgreSQL hosting on AWS, Azure and DigitalOcean with high availability and SSH access on the #1 multi-cloud DBaaS.|
|Server operating systems||FreeBSD|
|Typing predefined data types such as float or date||yes||yes||yes integer and binary|
|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||yes specific XML-type available, but no XML query functionality.||no|
|Secondary indexes||yes||yes||yes with tags|
|SQL Support of SQL||yes||yes standard with numerous extensions||SQL-like query language|
|APIs and other access methods||ADO.NET|
native C library
streaming API for large objects
|Supported programming languages||.Net|
|Server-side scripts Stored procedures||user defined functions||user defined functions realized in proprietary language PL/pgSQL or with common languages like Perl, Python, Tcl etc.||no|
|Partitioning methods Methods for storing different data on different nodes||yes based on PostgreSQL||partitioning by range, list and (since PostgreSQL 11) by hash||Sharding consistent hashing|
|Replication methods Methods for redundantly storing data on multiple nodes||yes based on PostgreSQL||Source-replica replication other methods possible by using 3rd party extensions||Source-replica replication with selectable replication factor|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no||with Hadoop integration|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||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||yes by using LevelDB|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||no||no||yes Transient mode|
|User concepts Access control||yes based on PostgreSQL||fine grained access rights according to SQL-standard||Cryptographically strong user authentication and audit trail|
|More information provided by the system vendor|
|Specific characteristics||High-performance , high-speed, fully integrated timeseries database Seamlessly combines...|
|Competitive advantages||High performance in a cost-effective small package Real-time results for even large...|
|Typical application scenarios||Tick database Predictive maintenance Pre-deal checks Large scale monitoring|
|Key customers||Large EU investment banks US based hedge funds Orolia Tellmeplus|
|Market metrics||Has been running in very demanding production environments since 2013 Rapid adoption...|
|Licensing and pricing models||Community edition limited to 2 nodes and 16 GiB of storage per node available for...|
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|3rd parties||SQLFlow: Provides a visual representation of the overall flow of data. Automated SQL data lineage analysis across Databases, ETL, Business Intelligence, Cloud and Hadoop environments by parsing SQL Script and stored procedure.|
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