DBMS > IBM Db2 vs. PostgreSQL vs. Teradata Aster
System Properties Comparison IBM Db2 vs. PostgreSQL vs. Teradata Aster
Please select another system to include it in the comparison.
|Editorial information provided by DB-Engines|
|Name||IBM Db2 formerly named DB2 or IBM Database 2 Xexclude from comparison||PostgreSQL Xexclude from comparison||Teradata Aster Xexclude from comparison|
|Teradata Aster has been integrated into other Teradata systems and therefore will be removed from the DB-Engines ranking.|
|Description||Common in IBM host environments, 2 different versions for host and Windows/Linux||Widely used open source RDBMS Developed as objectoriented DBMS (Postgres), gradually enhanced with 'standards' like SQL||Platform for big data analytics on multistructured data sources and types|
|Primary database model||Relational DBMS Since Version 10.5 support for JSON/BSON documents compatible with MongoDB||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|
RDF store in Db2 LUW (Linux, Unix, Windows)
Spatial DBMS with Db2 Spatial Extender
|Developer||IBM||PostgreSQL Global Development Group www.postgresql.org/developer||Teradata|
|Initial release||1983 host version||1989 1989: Postgres, 1996: PostgreSQL||2005|
|Current release||12.1, October 2016||14.5, August 2022|
|License Commercial or Open Source||commercial free version is 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|
Providers of DBaaS offerings, please contact us to be listed.
|Implementation language||C and C++||C|
|Server operating systems||AIX|
|Data scheme||yes||yes||Flexible Schema (defined schema, partial schema, schema free) defined schema within the relational store; partial schema or schema free in the Aster File Store|
|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.||yes in Aster File Store|
|SQL Support of SQL||yes||yes standard with numerous extensions||yes|
|APIs and other access methods||ADO.NET|
JSON style queries MongoDB compatible
native C library
streaming API for large objects
|Supported programming languages||C|
|Server-side scripts Stored procedures||yes||user defined functions realized in proprietary language PL/pgSQL or with common languages like Perl, Python, Tcl etc.||R packages|
|Partitioning methods Methods for storing different data on different nodes||Sharding only with Windows/Unix/Linux Version||partitioning by range, list and (since PostgreSQL 11) by hash||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||yes with separate tools (MQ, InfoSphere)||Source-replica replication other methods possible by using 3rd party extensions||yes Dimension tables are replicated across all nodes in the cluster. The number of replicas for the file store can be configured.|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no||yes SQL Map-Reduce Framework|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Immediate Consistency or Eventual Consistency depending on configuration|
|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|
|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||fine grained access rights according to SQL-standard||fine grained access rights according to SQL-standard||fine grained access rights according to SQL-standard|
More information provided by the system vendor
We invite representatives of system vendors to contact us for updating and extending the system information,
|Related products and services|
|3rd parties||The State of PostgreSQL 2022 survey is now open!
EDB: BigAnimal is fully-managed PostgreSQL in the cloud from the database fanatics at EDB.
Datasentinel: Platform for Monitoring and Analyzing the performance problems of your PostgreSQL Clusters
Aiven for PostgreSQL: The familiar open source PostgreSQL® that you know and love, with no proprietary features or add-ons that will lock you in.
Fujitsu Enterprise Postgres: An Enterprise Grade PostgreSQL with the flexibility of a hybrid cloud solution combined with industry leading security, availability and performance.
Percona: Database problems? Not on your watch.
Databases run better with Percona.
Navicat for PostgreSQL is an easy-to-use graphical tool for PostgreSQL database development.
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.
Instaclustr: Fully Hosted & Managed PostgreSQL
pgDash: In-Depth PostgreSQL Monitoring.
CYBERTEC is your professional partner for PostgreSQL services and Data Science since 2000. With offices in Austria, Uruguay, Estonia, Poland, South Africa and Switzerland, CYBERTEC operates worldwide and is here for you 24/7!
DbVisualizer is equipping database professionals with the tools they need to build, manage and maintain state-of-the-art database technologies. It has sky-high user satisfaction and is the preferred tool for database professionals around the world. Customers include Tesla, Apple, Facebook, Deutsche Bank, NASA, and 25,000 others in 145 countries.
We invite representatives of vendors of related products to contact us for presenting information about their offerings here.
|IBM Db2 formerly named DB2 or IBM Database 2||PostgreSQL||Teradata Aster|
|DB-Engines blog posts|
Snowflake is the DBMS of the Year 2021
|Recent citations in the news|
IBM launches Db2 operator for Kubenetes on AWS
The cloud ate my database
Db2, where are you? Big Blue is oddly reluctant to discuss recent enhancements to its flagship database
Db2 13 appears for z/OS, promises AI, hybrid cloud features
Top 10 DB2 Support Issues
provided by Google News
Timescale Releases Third State of PostgreSQL Report
More tenants, more vulnerabilities
How to Work With a PostgreSQL Database Using psql Commands - MUO
Install PostgreSQL pgAdmin 4 on Ubuntu 22.04 LTS Jammy Linux
How to Create a CRUD API Using Node, PostgresSQL, and Express - MUO
provided by Google News
Big Data Analytics: Teradata Launches Aster Discovery Platform
How to Select the Right Database for Time-Series Data
Case study: Siemens reduces train failures with Teradata Aster
What Is a Data Lakehouse?
Teradata Integrates Big Data Analytic Architecture
provided by Google News
SQL Database Administrator-11316
DB2 Database Programmer (REMOTE)
Database Administrator (DB2 z/OS)
PostgreSQL Database Administrator
PostgreSQL Apps DBA
Data Scientists – Machine Learning
Consultant - Data Engineer
Sr. Consultant - Data Engineer
Sr Analyst, Digital Analytics
Sr Analyst, DACI Analytics - Loyalty Analytics
Share this page