With the ER diagram given below, write the Relational Algebra: for each physician in the Intensive Care Unit (a department) at Toronto medical center, return the disease and prognosis of each of their patients. Also for each patient, report the patient id and total cost the patient has spent on medical tests and medical drugs via prescriptions.

Cty Own First Name Postal Cod0 Dato InsuranoeType s of Pradice Years of Patent Cale Medical Test Phy wiork Nur Work Onug Cahegory Annual Budget Cty Street Cty Own First Name Postal Cod0 Dato InsuranoeType s of Pradice Years of Patent Cale Medical Test Phy wiork Nur Work Onug Cahegory Annual Budget Cty Street