If a column contains 7 values and 6 distinct values, the cardinality is . . . . . . . .
A. 7
B. 6
C. 13
D. 1
Answer: Option B
Solution (By Examveda Team)
This question is about cardinality in MySQL. Cardinality measures how many unique values are present in a column.Imagine a column with these values:
Apple, Orange, Apple, Banana, Pear, Orange, Grape
We have 7 values in total, but only 6 unique values (Apple, Orange, Banana, Pear, Grape).
So, the cardinality is 6.
Therefore, the correct answer is Option B: 6.
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