1. A method for product display in a product lifecycle management (PLM) system, comprising: receiving a persistence model of a physical assembly; transforming the persistence model to a bill of materials (BOM) window that includes a plurality of BOM lines each corresponding to a physical part; constructing an engineering design structure corresponding to the physical assembly; creating a hybrid BOM window by combining the engineering design structure with the BOM window, the hybrid BOM window including a plurality of hybrid BOM lines; and displaying a BOM window view based on the hybrid BOM window.