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Database - The Relational Model and Normalization - Discussion

Discussion Forum : The Relational Model and Normalization - General Questions (Q.No. 12)
The Relational Model and Normalization
12.
Which of the following is not a restriction for a table to be a relation?
The cells of the table must contain a single value.
All of the entries in any column must be of the same kind.
The columns must be ordered.
No two rows in a table may be identical.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
11 comments Page 2 of 2.
Vikas said:   1 decade ago
I an not getting , what the mean of D option. Two row can not be
same ,this line is saying... but two row can be same in relation.
plz describe this last D option.
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