Dates must be specified in the format
A. mm/dd/yy
B. yyyy/mm/dd
C. dd/mm/yy
D. yy/dd/mm
Answer:A
Dates must be specified in the format
A. mm/dd/yy B. yyyy/mm/dd C. dd/mm/yy D. yy/dd/mm
Explanation:yyyy/mm/dd is the default format in sql . 2. An ________ on an attribute of a relation is a data structure that allows the database system to find those tuples in the relation that have a specified value for that attribute efficiently, without scanning through all the tuples of the relation.