Data Dictionary How to get to 5%? Create a list of preventive maintenance items. These are items that need to reside in IBM Maximo, UCSF’s Computer Maintenance Management System. Start with Omniclass table or similar to get an understanding of all the assets that could be in a project. Target all assets that need PM or has regulatory requirements Sub-catagorize Sub-categorize into appropriate trades and their respective modelsDefine attributes needed to commission the asset The Data Dictionary helps guide the project team to deliver the project data deliverable in a way the data can be extracted from the Building Information Models.