Create an application in salesforce.com using APEX programming language

Step 1:

Log into your Sandbox or Developers Organization.
Click on setup ⇒ create ⇒ objects ⇒ new custom objects.
Enter Book for label.
Enter Books for plural label.
Click Save.

Create a warehouse app using Salesforce.com

Steps to create an application in Force.com by declarative model

Create an account and Log in to force.com

Step 1

Click on Setup ⇒ Create ⇒ Objects ⇒ New custom ⇒ object
Label: MySale
Pular Label: MySales
Object Name: MySalev
Record Name: MySale Description
Data Type: Text
Click on Save.