Question

Which of the following is not true about relational tables?

? Column values are of thesame kind.

? Each row is unique.

? Each column must have aunique name.

? The sequence of rows issignificant.

Answer 1

The sequence of rows is significant.

Step-by-step explanation:

The relational tables have the following characteristics:

• Column values are of the same kind.
• Each row is distinct and there are no duplicate rows.
• Each column has a unique name which is used to reference that column.
• The sequence of rows or columns is insignificant.

That means that if I have a table consisting of 2 rows R1 and R2 then the sequence of R1 and R2 is immaterial.