Exam CIPP-A topic 1 question 17 discussion

SCENARIO – Please use the following to answer the next question:
B-Star Limited is a Singapore based construction company with many foreign construction workers. B-Star's HR team maintains two databases. One (the "simple database") contains basic details from a standard in-processing form such as name, local address and mobile number. The other database (the "sensitive database") contains information collected by the HR Department as part of Annual Review Interviews. With the workers' cooperation, this database has expanded to include far-reaching sensitive information such as medical history, religious beliefs, ethnicity and educational levels of immediate family members. Carl left B-Star's employment yesterday, and has flown back home, rendering him unreachable. Today B-Star, without Carl's consent, wants to conduct research using Carl's medical records in the sensitive database.
Can B-Star legally conduct this research using Carl's medical data?