中等ICT-DBAS-003
A foreign key is:
A. A second copy of a photograph stored as a bitmap.
B. An output device.
C. A sampling rate.
D. A field that stores the primary key of a related record in another table.✓ 答案
解說
The foreign key is how tables are linked. In a loan table, BorrowerID pointing at the borrower table is a foreign key.