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Question

Which of the following is not a restriction for a table to be a relation?

a.

The cells of the table must contain a single value.

b.

All of the entries in any column must be of the same kind.

c.

The columns must be ordered.

d.

No two rows in a table may be identical.

Posted under DBMS

Answer: (c).The columns must be ordered.

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Q. Which of the following is not a restriction for a table to be a relation?