Oracle Fusion Project Portfolio Management (PPM) is part of the Oracle Fusion Applications suite, which is designed to provide a complete and integrated solution for managing projects and project portfolios. Within Oracle Fusion PPM, there are several underlying database tables that store different types of data.

 Here is an overview of some key tables associated with Oracle Fusion PPM:

1. FUSION_PROJECTS: Stores information about projects, including project details, status, and key dates.

2. FUSION_TASKS: Contains details about individual tasks within projects, such as task name, start date, end date, and status.

3. FUSION_RESOURCES: Tracks resources like personnel and equipment associated with tasks or projects.

4. FUSION_COSTS: Records cost data related to projects. This can include labor costs, material costs, and overheads.

5. FUSION_REVENUES: Stores revenue information linked to projects or tasks.

6. FUSION_FORECASTS: Contains forecast data for projects, including expected costs, revenues, and other financial metrics.

7. FUSION_RATES: Manages rate information for resources, which can be used in costing and budgeting.

8. FUSION_BUDGETS: Handles budget information for projects, which can be used for comparison with actuals and forecasting.

9. FUSION_TRANSACTIONS: Records transactional data related to projects, such as expenses, billings, and receipts.

10. FUSION_APPROVALS: Manages approval workflows for different project-related activities.

These are just a few tables, and there are many more underlying tables that store granular data and support the features of Oracle Fusion PPM. If you’re planning to work with these tables, I recommend accessing the official Oracle documentation or working with a database administrator who is familiar with the Oracle Fusion schema.