# Creating Default Entity Objects and Associations from a Database

Business Components for Java can automatically generate entity objects and associations from some or all of your database tables when you use these wizards:

- Business Components Project Wizard

- Package Wizard

When you let a wizard generate default entity objects, it uses the predefined data type mappings. For Oracle Object Types and types that do not have predefined mappings, it attempts to create a domain for the type. You can change the data type after reverse generation, if needed.

Before generating default business components, you can specify that the wizards use customized framework base classes, if needed.

Related topics
Ways to Create Entity Objects and Associations
Preparing for Reverse Generation
About the Development Process
About Generating Entity Objects, Associations, and Database Tables
About Reverse Generation
What Is an Entity Object?
What Is an Entity Attribute?
Business Component Data Types
Setting Framework Base Classes
The Files that Define an Entity Object