Abstract: A base assembly generated from a model in a computer system and a customization assembly generated from a customization model that models customization to the computer system are run separately. The customizations are applied to extend the base system, without overwriting any of the code for the base system.

Abstract: A customization environment uses a customization system that models customizations to a base computer system. Each set of customizations is stored as a separate extension package, which is stored separately from the code for the base system. During runtime, the extension packages are discovered in a runtime environment and applied to extend the base system, without overwriting any of the code for the base system.

Abstract: A configuration application utilizes an application configuration framework to create a configuration questionnaire to dynamically manage an enterprise resource planning (ERP) application installation process. The configuration application imports an ERP system's metadata to configure the ERP application installation through the application configuration framework. The configuration application requests question parameters from a configuring user to configure the ERP application installation according to the metadata. Subsequently, the configuration application creates a configuration questionnaire for the ERP application installation based on the question parameters.