title: How to create a small and simple database using Oracle 11 g and SQL Developer?
body: <p>How to create a small and simple database using Oracle 11 g and SQL Developer ? 
  I am seeing too many errors and I cannot find any way to make a simple database.
  For example</p>
  
  <pre><code>create database company; 
  </code></pre>
  
  <p>Caused the following error:</p>
  
  <pre><code>Error starting at line 1 in command:
  create database company
  Error at Command Line:1 Column:0
  Error report:
  SQL Error: ORA-01501: CREATE DATABASE failed
  ORA-01100: database already mounted
  01501. 00000 -  "CREATE DATABASE failed"
  *Cause:    An error occurred during create database
  *Action:   See accompanying errors.
  </code></pre>
  
  <p>EDIT-
  This is completely different from MySQL and MS-SQL that I am familiar with. 
  Not as intuitive as I was expecting.</p>