Databases Comparison

http://database-management-systems.findthebest.com/compare/9-30-36-55/DB2-vs-MySQL-vs-Oracle-vs-Teradata

DB Ranking 2013

http://db-engines.com/en/ranking

Rank

Datbase

DatabaseModel

1
Oracle
Relational DBMS

2
MySQL
Relational DBMS

3
Microsoft SQL Server
Relational DBMS

4
PostgreSQL
Relational DBMS

5
DB2
Relational DBMS

6
MongoDB
Document store

7
Microsoft Access
Relational DBMS

8
SQLite
Relational DBMS

9
Sybase
Relational DBMS

10
Cassandra
Wide column store

11
Teradata
Relational DBMS

12
Solr
Search engine

13
Redis
Key-value store

14
FileMaker
Relational DBMS

15
Memcached
Key-value store

16
HBase
Wide column store

17
Informix
Relational DBMS

18
Hive
Relational DBMS

19
CouchDB
Document store

20
Netezza
Relational DBMS