Human Resources (HR) and Order Entry Schemas This is an entity relationship diagram of Human Resources (HR) and Order Entry (OE). The following tables are contained in the HR schema: EMPLOYEES JOBS JOB_HISTORY DEPARTMENTS LOCATIONS COUNTRIES REGIONS The following tables are contained in the OE schema: ORDERS ORDER_ITEMS PRODUCT_INFORMATION PRODUCT_DESRIPTIONS INVENTORIES WHAREHOUSES CUSTOMERS For more details, refer to Chapter 2, "Rational" and Chapter 4, "Oracle9i Sample Schema Scripts".