Install Oracle Database Express Editions

Similar to Ms-SQL sever express editions (a scaled-down version of the big Cat), Oracle also provides express editions (XE). You can check out the latest XE version below URL.

http://www.oracle.com/technetwork/database/database-technologies/express-edition/overview/index.html

(Ref:http://www.oracle.com/)

Oracle Database XE is a great starter database for:

• Developers working on Node.js, Python, PHP, Java, .NET, XML, and Open Source applications
• DBAs who need a free, starter database for training and deployment
• Independent Software Vendors (ISVs) and hardware vendors who want a starter database to distribute free of charge
• Educational institutions and students who need a free database for their curriculum

With Oracle Database XE, you can now develop and deploy applications with a powerful, proven, industry-leading infrastructure, and then upgrade when necessary without costly and complex migrations.

Restrictions :

Oracle Database XE can be installed on any size host machine with any number of CPUs (one database per machine), but XE will store up to 11GB of user data, use up to 1GB of memory, and use one CPU on the host machine.