PeopleSoft regulates HRMS system data through the use of business units, tablesets, and setIDs.

Business Units:

• Business units are logical units that you create to track and report specific business information. Business units have no predetermined restrictions or requirements; they are a flexible structuring device that enable you to implement PeopleSoft HRMS based on how your business is organized.

• You must define at least one business unit. The BUSINESS_UNIT field is included on all transaction tables.

Read Further:http://peoplesoftnotebook.blogspot.com/2012/08/peoplesoft-hcm-setup...