Question

describe design tool in  windows excess

Answer 1

a way to modify the stucture of a table

Answer 2

Application Compatibility Toolkit (ACT): Take inventory of applications and devices in your organization. Collect compatibility data while you test your applications on the version of Windows that you want to deploy. 
For more information, see Application Compatibility Toolkit Technical Reference.
User State Migration Tool (USMT): Migrate user settings and application settings in your organization.
For more information, see User State Migration Tool Technical Reference.
Volume Activation Management Tool (VAMT) : Manage activation of Windows for your organization.
For more information, see Volume Activation Management Tool Technical Reference.