DBMS > IBM Cloudant vs. PostgreSQL

System Properties Comparison IBM Cloudant vs. PostgreSQL

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Editorial information provided by DB-Engines

Name

Description

Database as a Service offering based on Apache CouchDB

Widely used open source RDBMS

Developed as objectoriented DBMS (Postgres), gradually enhanced with 'standards' like SQL

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.

Secondary database models

Document store

DB-Engines Ranking measures the popularity of database management systems
Trend Chart

Score	4.09
Rank	#84	Overall
	#15	Document stores

Score	552.23
Rank	#4	Overall
	#4	Relational DBMS

Website

www.ibm.com/cloud/cloudant

www.postgresql.org

Technical documentation

cloud.ibm.com/docs/Cloudant

www.postgresql.org/docs

Developer

IBM, Apache Software Foundation

IBM acquired Cloudant in February 2014

PostgreSQL Global Development Group

www.postgresql.org/developer

Initial release

2010

1989

1989: Postgres, 1996: PostgreSQL

Current release

13.1, November 2020

License

Commercial or Open Source

commercial

Open Source

BSD

Cloud-based only

Only available as a cloud service

yes

DBaaS offerings (sponsored links)

Database as a Service

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Implementation language

Erlang

Server operating systems

hosted

FreeBSD
HP-UX
Linux
NetBSD
OpenBSD
OS X
Solaris
Unix
Windows

Data scheme

schema-free

yes

Typing

predefined data types such as float or date

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.

Secondary indexes

yes

SQL

Support of SQL

yes

standard with numerous extensions

APIs and other access methods

RESTful HTTP/JSON API

ADO.NET
JDBC
native C library
ODBC
streaming API for large objects

Supported programming languages

C#
Java
JavaScript
Objective-C
PHP
Ruby

.Net
C
C++
Delphi
Java

JDBC
JavaScript (Node.js)
Perl
PHP
Python
Tcl

Server-side scripts

Stored procedures

View functions (Map-Reduce) in JavaScript

user defined functions

realized in proprietary language PL/pgSQL or with common languages like Perl, Python, Tcl etc.

Triggers

yes

Partitioning methods

Methods for storing different data on different nodes

Sharding

partitioning by range, list and (since PostgreSQL 11) by hash

Replication methods

Methods for redundantly storing data on multiple nodes

Multi-source replication
Source-replica replication

Source-replica replication

other methods possible by using 3rd party extensions

MapReduce

Offers an API for user-defined Map/Reduce methods

yes

Consistency concepts

Methods to ensure consistency in a distributed system

Eventual Consistency

Immediate Consistency

Foreign keys

Referential integrity

yes

Transaction concepts

Support to ensure data integrity after non-atomic manipulations of data

atomic operations within a document possible

ACID

Concurrency

Support for concurrent manipulation of data

yes

Optimistic locking

yes

Durability

Support for making data persistent

yes

In-memory capabilities

Is there an option to define some or all structures to be held in-memory only.

User concepts

Access control

Access rights for users can be defined per database

fine grained access rights according to SQL-standard

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More resources

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Recent citations in the news

Introducing IBM Cloudant on Transaction Engine: Cloud Native by Design
23 June 2020, DevOps.com

IBM Expands Cloud Database Services with Kubernetes
26 September 2019, EnterpriseAI

IBM to Purchase Cloudant Database as a service (DBaaS) Provider
22 March 2014, App Developer Magazine

How to Trigger OpenWhisk Actions on Cloudant Databases Changes
27 July 2016, DZone News

IBM’s new CEO lays out his roadmap
5 May 2020, InfoWorld

provided by Google News

What the PostgreSQL community has done so right
30 December 2020, TechRepublic

Crunchy Data PostgreSQL Security Technical Implementation Guide Now Available
6 January 2021, PRNewswire

PostgreSQL Is DB-Engines DBMS of the Year For 2020
15 January 2021, iProgrammer

Know How RDBMS Software Market Is Thriving Continuously By Top Key Players | Microsoft, Oracle, PostgreSQL Global Development Group
19 January 2021, KSU | The Sentinel Newspaper

SQL Market 2020 | Know the Latest COVID19 Impact Analysis And Strategies of Key Players: PostgreSQL, Sybase, MySQL, Microsoft, Basho Technologies, etc. | InForGrowth
19 January 2021, NeighborWebSJ

provided by Google News

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