,1. Which of the following is the primary role of a healthcare data
warehouse?
- a) To replace transactional databases
- b) To provide a central repository for integrating data from
various sources
- c) To eliminate the need for data governance
- d) To serve as an electronic health record (EHR) system
- ANS: b) To provide a central repository for integrating data
from various sources
2. What is an entity-relationship diagram (ERD) primarily used
for in database systems?
- a) To depict the physical storage of data
- b) To convert SQL queries into machine code
- c) To visually represent the relationships between data entities
- d) To encrypt sensitive patient data
- ANS: c) To visually represent the relationships between data
entities
, - a) First Normal Form (1NF)
- b) Second Normal Form (2NF)
- c) Third Normal Form (3NF)
- d) Boyce-Codd Normal Form (BCNF)
- ANS: c) Third Normal Form (3NF)
4. Which database security measure involves converting data
into an unreadable format to protect it from unauthorized access?
- a) Data normalization
- b) Encryption
- c) Data indexing
- d) Data redundancy
- ANS: b) Encryption
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