DBI202Xuất hiện trong 1 đề thi
How can you rename multiple attributes simultaneously in Relational Algebra?
Các lựa chọn
ARENAME attribute1, attribute2 IN relation TO new_attribute1, new_attribute2
BALTER TABLE relation RENAME attribute1, attribute2 TO new_attribute1, new_attribute2
CUPDATE relation SET attribute1 = new_attribute1, attribute2 = new_attribute2
DRENAME relation TO new_relation