DBI202Xuất hiện trong 1 đề thi
Which of the following statements is/are TRUE? (1) A column with FOREIGN KEY constraint does not allow duplicate values. (2) A FOREIGN KEY constraint can be defined to refer to columns with the UNIQUE constraint in another table.
Các lựa chọn
ABoth the statements are True.
BBoth the statements are False.
COnly statement 1 is True.
DOnly statement 2 is True.