DBMS > IBM Db2 vs. Informix

System Properties Comparison IBM Db2 vs. Informix

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Editorial information provided by DB-Engines

Name

Description

Common in IBM host environments, 2 different versions for host and Windows/Linux

A secure embeddable database from IBM, positioned besides DB2 as a relatively low-cost product optimized for OLTP and Internet of Things data

Primary database model

Relational DBMS info

Since Version 10.5 support for JSON/BSON documents compatible with MongoDB

Relational DBMS info

Since Version 12.10 support for JSON/BSON datatypes compatible with MongoDB

Secondary database models

Document store
Key-value store
RDF store info

in DB2 LUW (Linux, Unix, Windows)

Document store
Key-value store

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

Score	179.85
Rank	#6	Overall
	#5	Relational DBMS

Score	26.76
Rank	#26	Overall
	#15	Relational DBMS

Website

www.ibm.com/analytics/us/en/db2

www.ibm.com/analytics/informix

Technical documentation

www.ibm.com/support/knowledgecenter/SSEPGG

informix.hcldoc.com
www.ibm.com/support/knowledgecenter/SSGU8G/welcomeIfxServers.html

Developer

IBM

IBM, HCL Technologies info

Effective May 1st, 2017, HCL took on development, technical support, and product management teams, and works jointly with IBM on product strategy, marketing, and sales.

Initial release

1983

host version

1984

Current release

12.1, October 2016

12.10.xC12, July 2018

License

Commercial or Open Source

commercial info

free version is available

commercial info

free developer edition available

Cloud-based only info

Only available as a cloud service

Implementation language

C and C++

C, C++ and Java

Server operating systems

AIX
HP-UX
Linux
Solaris
Windows
z/OS

AIX
HP-UX
Linux
macOS
Solaris
Windows

Data scheme

yes

Typing

predefined data types such as float or date

yes

Since Version 12.10 support for JSON/BSON datatypes

Secondary indexes

yes

SQL

Support of SQL

yes

APIs and other access methods

JSON style queries info

MongoDB compatible
XQuery
ADO.NET
JDBC
ODBC

JSON API

MongoDB compatible
MQTT (Message Queue Telemetry Transport)
RESTful HTTP API
JDBC
ODBC

Supported programming languages

C
C#
C++
Cobol
Delphi
Fortran
Java
Perl
PHP
Python
Ruby
Visual Basic

.Net
C
C++
Java
JavaScript (Node.js)
PHP
Python
Ruby

Server-side scripts info

Stored procedures

yes

Triggers

yes

Partitioning methods info

Methods for storing different data on different nodes

Sharding

only with Windows/Unix/Linux Version

Sharding

Replication methods info

Methods for redundantly storing data on multiple nodes

yes

with separate tools (MQ, InfoSphere)

Master-master replication
Master-slave replication

MapReduce

Offers an API for user-defined Map/Reduce methods

Consistency concepts info

Methods to ensure consistency in a distributed system

Immediate Consistency

Foreign keys info

Referential integrity

yes

Transaction concepts info

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

ACID

Concurrency info

Support for concurrent manipulation of data

yes

Durability info

Support for making data persistent

yes

In-memory capabilities info

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

yes

User concepts info

Access control

fine grained access rights according to SQL-standard

Users with fine-grained authentication, authorization, and auditing controls

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