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PostgreSQL vs. IBM DB2

PostgreSQL IBM DB2 + Add column
Category
Preference (65% global votes) (58% global votes)
Website www.​postgresql.​org www.​ibm.​com/​software/​data/​db2
License
Design
Database model
Data storage
Embeddable No No
Features
Query language
Data types
Conditional entry updates Yes Yes
Map and reduce No No
Unicode Yes Yes
TTL for entries Yes ?
Compression Yes Yes
Integrity
Integrity model
Atomicity Yes Yes
Consistency Yes Yes
Isolation Yes Yes
Durability (data storage) Yes Yes
Transactions Yes Yes
Referential integrity Yes Yes
Revision control Yes Yes
Locking model
Indexing
Secondary Indexes Yes Yes
Composite keys Yes Yes
Full text search Yes Yes
Geospatial Indexes Yes Yes
Graph support Conditional Yes
Distribution
Horizontal scalable Yes Yes
Replication Yes Yes
Replication mode
Sharding Yes Yes
Shared nothing architecture ? Yes
Restrictions
Value size max. 1 GB 2 EB
System requirements
Operating system
Native driver
Memory minimum 32 MB 256 MB
Architecture
Programming language
More
Description Object-Relational Database Management System Rdbms
Brand
Multi-user system Yes Yes
Extension/Plug-in Yes Conditional
Database
Multilingual content Yes ?
Price rating ★★★★★ ★★★★☆
WYSIWYG-Editor Yes ?
Multiple projects Yes ?
Standard compliance Yes Yes
Software distribution
Object-Relational Mapping (ORM) Yes Yes
Release Date May 1995 ?
Documentation level ★★★★★ ★★★★☆
RESTful Yes Yes
Lines of code 839 k ?
Free to use Yes Conditional
Active Yes Yes
Database Connection Pooling Yes Yes
Real time analytics Yes Yes
Community Driven Good No
Web interface Yes Yes
Data encryption Yes Yes
API Good Good
XML Aware Good ?
Color ?
Cloud platform support
Online backup Yes Yes
Partial Index Yes Yes
Function Based Index Yes Yes
Log Yes Yes
Implementation flexibility (83% global votes) (0% global votes)
Download www.​postgresql.​org/​download/​ www-01.​ibm.​com/​software/​data/​db2/​
Level of access authorization
Backup functionality Good Excellent
Query Cache Yes Yes
Ease of use ★★★★★ ★★★★☆
In-Place Update Yes Yes
Free for commercial use Yes Yes
Sorts Yes Yes
Tuneable write concerns Yes ?
Read preferences Yes Yes
Open Source Yes No
Op/s 1 000 005 ?
XQuery Support Yes ?
Triggers Yes Yes
Server side custom code Yes ?
Perfomance ★★★★★ ★★★★★
Cloud-enabled Yes Yes
Minimal memory footprint 32 MB ?
Multivariate Testing Yes ?
Materialized Views Yes Yes
Pipeline Aggregation Yes ?
Spring Data Support Yes ?
Geospatial Yes Yes
Text Analytics Yes Yes
Server Side Java Script Yes ?
HTML5 Charts No ?
JSON Yes Yes
Flexible Table(Schema) Yes Yes
Geo-distributed Yes ?
Batch Loading Yes ?
ORM Join Support Yes ?
Fully Distributed Yes ?
Stored Procedure Yes Yes
Concurrency Yes Yes
Auto-Sharding No ?
Contributors 21 ?
24/7 support Yes ?
Free edition Yes Yes
SQL Queries Yes ?
User and Group role based security model Yes ?
3D Support No ?
Monitoring UI Yes ?
Recursive queries Yes Yes
Network datatype Yes ?
Windowed aggregate Yes ?
Online backup (no locking) Yes Yes
CLI` Yes Yes
:( No ?
; drop table users; No ?
Point In Time Recovery Yes ?
Accelerometer sensor ? No
Pause Test ? Yes
Predictive Analytics ? Yes
Max rows in query result ? 5
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PostgreSQL IBM DB2
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