.2 Work Breakdown Structure The ke

.2 Work Breakdown Structure
The key document generated by the Create WBS process is the actual WBS. Each WBS component, including work package and control accounts within a WBS, is generally assigned a unique identifier from a code of accounts. These identifiers provide a structure for hierarchical summation of costs, schedule, and resource information.
The WBS should not be confused with other kinds of breakdown structures used to present project information. Other structures used in some application areas or other Knowledge Areas include:
• Organizational Breakdown Structure (OBS).Provides a hierarchically organized depiction of the project organization arranged so that the work packages can be related to the performing organizational units.
• Bill of Materials (BOM).Presents a hierarchical tabulation of the physical assemblies, subassemblies, and components needed to fabricate a manufactured product.
• Risk Breakdown Structure (RBS).A hierarchically organized depiction of the identified project risks arranged by risk category.
• Resource Breakdown Structure (RBS).A hierarchically organized depiction of the resources by type to be used on the project.