What is a foreign key in DBMS?
A. A column or combination of columns that uniquely identifies each row in a table
B. A column that contains only unique values
C. A column that references the primary key of another table
D. None of the above
Answer:C
What is a foreign key in DBMS?
A. A column or combination of columns that uniquely identifies each row in a table B. A column that contains only unique values C. A column that references the primary key of another table D. None of the above