One important difference between a relation and a column family is that ________.
A)the rows in a column family can have different numbers of columns
B)the columns in a column family are unnamed
C)all values in a column family must have the same timestamp
D)values in a column family must be strings

Question

Quizplus · Accepted Answer

Relations have a fixed, predefined set of columns, whereas column families can have variable columns for each row. This is one of the main distinctions between the two data models.

One Important Difference Between a Relation and a Column Family